Question 1

Which cars do you specialise in?

Accepted Answer

We specialise in the Toyota Supra Mk4 (A80) and the Nissan Skyline R32, R33 and R34 — 2JZ NA and 2JZ-GTE VVT-i, plus RB25DET and RB26DETT. That focus is exactly why our work is as good as it is.

Question 2

Where are you based?

Accepted Answer

We're at Red Hare Farm / Dotterel Farm, Newmarket Road, Heydon SG8 7PD, looking after customers across Hertfordshire, Cambridgeshire and the wider UK.

Question 3

Do you do servicing, or only custom builds?

Accepted Answer

Both. From routine servicing, repairs and diagnostics to ground-up custom builds — plus tuning, fabrication, wiring and engine building.

Question 4

Can you build a full track or motorsport car?

Accepted Answer

Yes. We build fully bespoke race cars from the ground up, engineered for driving dynamics, outright speed and long-term reliability — from club racing to competition.

Question 5

Do you supply and fit performance parts?

Accepted Answer

We supply the highest-tier performance parts on the market and fit them properly as part of a balanced, reliable setup.

Question 6

How much does a build or service cost?

Accepted Answer

Every car and goal is different, so we quote per project. Get in touch with what you're after and we'll give you an honest, tailored quote.

Question 7

How long will my build or work take?

Accepted Answer

Timescales depend on scope and parts availability. We'll give you a realistic timeline up front and keep you updated throughout.

Question 8

Will tuning or modifying affect my car's reliability?

Accepted Answer

Done right, no. Our whole philosophy is balanced performance — power and reliability — engineered to last on the road and the track.

Question 9

How do I book my car in?

Accepted Answer

Call us on 07958 354592, email darren@magnumperformance.co.uk, or use the contact form — and we'll get you booked in.

Question 10

Where can I source reliable JDM parts without excessive import fees?

Accepted Answer

The best option is usually a trusted UK-based supplier with local stock, as this can help avoid customs delays, import duty, and extra VAT charges. For UK customers, 77worx.co.uk is a good place to start.

Question 11

Do you offer individual exhaust repairs or one-off custom exhaust work?

Accepted Answer

We do not offer individual exhaust repairs or one-off custom exhaust work. Our exhaust fabrication services are available for custom and project car builds only.

Builds

Toyota Supra 2JZ-GTE 6-Speed — Full Restoration

Nissan R32 GTR — 550hp Street Car

Mazda RX-7 — 550hp Street Car

Toyota Supra Mk4 — 2JZ VVTi Single Turbo CD009 Swap

Nissan 370Z — 2JZ Engine · ZF8HP Conversion · 1250hp

Nissan Skyline R32 GTR — 900hp

Nissan R33 GTR — HKS Top Mount Turbo Kit · 570hp

Subaru EJ20 Closed Deck 2.1 Stroker — 565bhp GT35R