Category illustration — not Simpson Design's own work
Simpson Design
Source verifiedClinton, Washington
Contact the shop directly to confirm current availability and your project scope.
Simpson Design is Jim Simpson’s bespoke sports-car design and coachbuilding business in Clinton, Washington. Official project pages document custom automobiles using first-, second-, and third-generation Mazda Miata donor platforms, with individual designs discussed directly with the builder.
Source-verified profile
This profile was matched against public business sources for shop identity, location, service focus, and contact presence.
Last checked
Nov 8, 2026
Project Fit & Intake
Best fit for
- Bespoke sports-car coachwork using documented NA, NB, or NC Miata donor platforms.Source
Documented capabilities
- Design development and hand-built custom automobile work are described in the builder’s process.Source
Confirm before booking
- Confirm donor generation, available design, subcontracted work, current scheduling, and registration requirements before commissioning.Source
Current intake: The official contact page invites calls about commissioning a one-of-a-kind automobile or an existing design; confirm current project timing.
Intake sourceSpecialties
Works On
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Exact Platforms & Fit
Service Area
Clinton · Washington
Published Quote Process
- 1Send your exact model year, current condition, modifications, and intended use.
- 2Ask the shop to confirm supported scope, current availability, and a written quote.
Public Portfolio Or Representative Scope
Based on the public sources linked above. Confirm that the shop currently accepts this platform and scope before planning a project or budget.
Mazda Miata NA
Italia Classic
A custom-bodied sports car on the first-generation Miata platform; the official history distinguishes earlier customer kits from later in-house hand-built cars.
Quote-based
Supporting sourceMazda Miata NB
Italia 2
The official portfolio identifies a second-generation NB Miata chassis and mechanicals under individually tailored composite bodywork.
Quote-based
Supporting sourceMazda Miata NC
Italia 3 GTZ
A commissioned sports car based on a third-generation Miata, with redesigned body panels, glazing, and interior.
Quote-based
Supporting sourcePublished Warranty Policy
Confirm written warranty and support terms for your specific project before booking.
FAQs
Does Simpson Design publish Miata-based projects?
Yes. The Italia Classic, Italia 2, and Italia 3 GTZ pages identify NA, NB, and NC Mazda Miata donor platforms respectively.
Supporting source