Westfield Sport SDV Final Edition

The Westfield Sport - Single Donor Vehicle Kit

A kit car in the traditional sense. The Westfield SDV uses the major components of just one car. The Mazda MX5.  This market leading sports car donates it's engine, gearbox, differential, wiring loom and many other major components. With Mk1 and Mk2 MX5's available for less that £1000 it makes for a very cost effective route into Westfield Ownership.

Building a Westfield SDV is broken down into 4 easily managed chunks

Donor car

Strip and refurbish the components you are going to use.

SDV Starter Module

Take delivery and assemble the major components from your MX5 into your brand new Westfield Chassis.

Body Module

The body, fixings and fuel tank

Completion Package

Everything you need to complete your Westfield build. The quality, bespoke parts, interior trim, fastenings and IVA kit.

2024 Spec and Options List

All prices are inclusive of UK VAT @ 20%

Chassis (SEiW)
  • RHD / LHD
  • Engine
  • From Donor - Mazda 1.6 / 1.8 / 1.8 VVTi 
  • Gearbox
  • From Donor - Mazda 5 Speed Manual Gearbox
  • Diff
  • From - Donor Mazda MX5 LSD 
  • Body
  • ZK (Classic) 
  • ZK (Classic) + V8 Bonnet 
    (Required if using MK 2.5 Donor)
  • Colours
  • Black, Racing Green, Navy Blue, Electric Blue, Grey, Red, Orange, Yellow, White  
  • Wheels
  • From Donor
  • Tyres
  • From Donor
  • Seats
  • Sport Turbo Seats 
  • Coloured Logo/Diamond Stitching

  • Seat Belts
  • Harness 2 inch
  • Exhaust 
  • Full Stainless Steel Exhaust System (IVA)
  • From Donor
  • Roll Bar
  • Road (single loop)
  • MSA Race (braced)
  • FIA Full Cage
  • Fuel Tank
  • 27 (ZK) Litres​ ​
  • Weather Gear
  • Side Screen and Hood  
  • Suspension
  • Gen 2 Wide Track Wishbones, 
    GAZ Shocks and Westfield Springs
  • Hubs from Donor
  • Screen
  • Heated Screen 
  • Aero screen  
  • Heater
  • Heater 
  • Decals
  • Final Edition Westfield Decals 
  • Final edition, numbered chassis plate 

The Mazda MX5

The Mazda MX5 produced between 1989 and 2005 provides a perfect base for any lightweight, focused sports car. So good are the components, that we use their 5 speed gearbox and differential throughout the Westfield Sport Range.

The high-revving, 16 valve twin-cam engines provide more than enough power to entertain in Westfield's focused chassis. However if you get power hungry they can be easily tuned and upgraded with off the shelf components.

What car do I need to buy?

  • Mazda MX5 Mk1 (with pop-up headlamps, 1.6 or 1.8)
  • Mazda MX5 Mk2 (fixed headlamps, 1.6 or 1.8) 
  • Mazda MX5 Mk2.5 (These cars have Mazda's 1.8 VVTi engine and need a V8 Bonnet to clear the top of the engine. Only 5 speed gearboxes can be used.)

Refurbishing donor parts

It is our recommendation that you buy a car with a current MOT that can be tested before you take it apart. That way you will be able to make sure that the engine, gearbox and differential are all healthy before they go into your new Westfield. We provide information in the build book as to what is best checked and reconditioned before you start building your car. 

How long do they take to build?

Most owners complete the actual build of their car within 120 hours. The key to a fast, trouble free build is preparation of your donor components and focused chunks of time rather than the odd hour when you can get to it.

Donor Components Required

  • Engine and gearbox – complete
  • Air box and air flow meter
  • Complete wiring loom
  • Instrument panel cluster
  • Upper steering column complete
  • Lower steering column (needs to come to WCL for modification)
  • Differential
  • Rear uprights, hubs, discs and callipers
  • Handbrake lever and cables
  • Steering rack track rod end joints and nuts
  • Wheels and tyres and wheel nuts
  • Prop shaft (needs modifying but not by WCL)
  • Driveshafts including joints, lock nuts and hub nuts
  • Front bottom ball joints including castle nuts
  • Horns
  • Seats
  • Cooling fan
  • Side repeaters
  • Fuel filter and bracket
  • Carbon canister, pipe work and mounting bracket
  • Catalyst converter
  • Interior mirror
  • Windscreen washer bottle and pump
  • Battery
  • V5 (this provides the identity and registration number of the car)

Mazda Sport SDV Modules

You can buy a complete kit, or spread the cost and have the components delivered in modules as you progress with your build. 

All prices are inclusive of VAT @ 20% 

SDV ​Body Module

  • ZK Body Kit – scuttle, bonnet nose, screen fillet, wings, boot box, 
  • Westfield badges
  •  Fuel tank, sender and strap
  • Body mounting kit

Completion Module

  • IVA plastic cover kit
  • Rack mounting kit
  • 8mm fuel hose 
  • Track rod ends
  • Ball joint set
  • Fuel pump kit
  • Shock absorber kit
  • Steering rack
  • Fastener kit
  • Aluminium radiator
  • Expansion tank
  • Expansion tank cap
  • Windscreen washers, pump and  tank
  • XK fuel tank straps
  • Radiator mounting bracket
  • Thermostat washer
  • Expansion tank mounting bracket 
  • Fan mounting kit
  • Pair of interior panels – (vinyl cover)
  • Fastener kit
  • Wiper wheel box
  • Windscreen wiper motor kit
  • Wiper rack & tube set
  • Washer tubing
  • Wiper set (black)
  • Windscreen washer jet (black)
  • Windscreen & mounting pillars (black)
  • Rear no plate mount (fibre glass)
  • Fuel hose (57 mm / 2-1/4”)
  • Fuel cap & inlet assembly – unleaded
  • Wiring grommets
  • Fog / reverse lamp leveling bracket



  • Hose clamps
  • Indicator pod (plastic)
  • Wing mirrors – 1 pair (black)
  • Nose grill (expanded metal)
  • 3-point safety belt
  • Roll bar (black)
  • Silencer – with cat (5 1/2” dia)
  • Exhaust cover (5 1/2” dia)
  • Kick strip – 1 pair (vinyl)
  • Adjustable sport seats – 1 pair (vinyl)
  • Carpet set
  • Dashboard
  • Interior mirror
  • Crash pad covered
  • Fastener kit
  • Bonnet catch set
  • Exhaust manifold down pipe
  • Battery lead – positive
  • Battery lead – negative
  • Battery clamp
  • Battery tray
  • Kick strip – 1 pair (vinyl)
  • Brake pipe clips
  • Tie rap clips
  • Fuel pipe
  • Clevis pin
  • Light set including:
  • Headlamps (black)
  • Front indicators
  • Reversing light
  • Side light, indicators,  and rear lamp units
  • Number plate light

Owners Reviews

What our owners think about their Westfield SDV​

Mark Wendon

When I bought my SDV back in 2008 it was one of the very first to leave the Westfield production line. To me the Mazda donor was the obvious choice, using the components from a lightweight sports car to build a even lighter one!  It also  offered one of the lowest cost routes into Westfield ownership.  Buying the starter package, I was able to tailor the build the car to my own specification, but also knowing that all parts for completion were available from the factory when needed. From standard the Mazda engine and drive train offers very usable performance for B-road enjoyment and great potential for future tuning.

David Jones

I was looking for a kit car for my teenage son and myself to spend quality time together and make memories. Westfield is known for their build quality and I wanted a car with more than 200bhp.  

We’ve made loads of memories we wouldn’t of had without the car. He is 13 and we go out with the local kit car group. Plenty of good drives and events and made friends on the way. 

My tip would be don’t always listen to your teenager when they say “flat out dad” 😂 and it’s nice company having your teenager in the garage with you when you need a spanner!

Dom Osman

"Because it's just silly". I'm sure I will try something more sensible, but it's ridiculous that I, armed with nothing more than a bunch of silly ideas (and a spreadsheet), could take a car through so many versions of itself for such little relative cost. I wouldn't have been able to do that with any other model of Westfield.

Glynn Walters

I bought and built the Mazda SDV with a 1.8 VVTi back in 2020 and it hasn’t stopped putting a smile on my face every time I drive it!

It’s also been a never ending addiction of upgrades since!

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