Top Secret: Smokey Nagata's Golden Supra Empire
Smokey Nagata founded Top Secret in 1991 after leaving Veilside. His Gold Supra hit 197 mph on a British motorway, and his V12 Supra remains the wildest engine swap in JDM history.
Top Secret: Smokey Nagata's Golden Supra Empire
Kazuhiko "Smokey" Nagata founded Top Secret in 1991 after leaving Veilside, where he had been a lead engineer. Top Secret became the most flamboyant tuning house in Japan — and also one of the most technically accomplished.
The Gold Supra
In 2000, Nagata drove his Gold MK4 Supra from Tokyo to the UK by ship, then illegally ran it down a British motorway at 197 mph at 3 AM, documented by Max Power magazine. He was arrested, fined, and banned from driving in the UK. The Gold Supra was impounded and shipped back to Japan, where it became the single most iconic tuner car in history.
The Gold Supra made 900+ PS from a built 2JZ-GTE on twin HKS T51R turbos, with Top Secret's own hand-fabricated intake plenum, ARP everything, and Nagata's hand-tuned standalone ECU calibration. It ran pump gas.
The V12 Supra
In 2005, Nagata engineered one of the most improbable engine swaps in history: he fitted a Toyota 1GZ-FE V12 (from the Century luxury sedan) into an MK4 Supra chassis. The swap required custom engine mounts, a bespoke intake manifold, and a drivetrain modified to handle the V12's output. Top Secret twin-turbocharged the V12 for a reported 900+ hp.
The V12 Supra became a magazine cover star for years and cemented Nagata's reputation as the tuner willing to build anything.
Top Secret's Engineering
Beyond the showmanship, Top Secret produced a serious catalog:
- Body kits (the Gold Supra aero package remains one of JDM's most recognizable)
- Engine management (Top Secret F-Con systems paired with HKS hardware)
- Wheels, exhausts, coilovers
- Full turn-key builds (the "Monster" Top Secret builds command $300k+ when they surface)
Nagata's Philosophy
Unlike Mine's or Nismo, Top Secret never aimed at refinement. Nagata built cars to shock. Every Top Secret build pushed a limit somewhere — fastest, loudest, most outrageous swap, wildest body kit. The approach made Top Secret the Western tuner magazine darling of the early 2000s, and for that decade, every kid in every garage worldwide wanted to build a Smokey Nagata-inspired Supra.
Top Secret Today
The shop still operates in Yokohama. Nagata occasionally builds one-off projects, now in his 60s. Original Top Secret demo cars and parts are some of the most valuable JDM collectibles in existence.
Why Top Secret Matters
Top Secret proved that JDM tuning could be theater. Every modern "build for clout" shop owes a debt to Smokey Nagata's willingness to run 197 mph on a public motorway in the middle of the night. He got arrested for it. The Gold Supra became immortal.