It just never ends, does it? Just when you begin to think that over the years every conceivable engine swap and configuration has been attempted, Nagata-san at Top Secret comes along and stuns everyone. This is precisely what he did two years ago, building possibly the craziest Supra ever created. Behold the Top Secret V12 JZA80.

I’m pretty sure the reason Nagata-san decided to create this car was out of shear boredom. Back in 2006, months before the V12 Supra made its debut at the Tokyo Auto Salon, things were a little sedate in the Japanese sports car market. The R35 GT-R was more than a year away from being unveiled at the Tokyo Motorshow, meaning there was nothing really tantalizing on offer. Smoky had already tuned or created parts for most JDM models around, like with the Z33. So custom one-off projects like this were the only way to satisfy his appetite for power and innovation.

The idea with the TS8012V project was to create one of the most extreme cars ever made by Top Secret, and it all began with the body. Called “Final Evolution” the ¥600,000 wide-body kit was fashioned to salute the JZA80 with an extreme futuristic take on a possible future evolution of the Supra. The design is very angular…

…especially at the front where the biggest changes are. Taking center stage are the custom headlights, which along with the front snout of the new bumper, drastically change the look of the Supra.

The very flowing and pointy profile is there for a reason, because underneath the aggressive exterior lurks an even more menacing presence…

Opening the carbon hood reveals probably the most extreme engine Top Secret has ever built, the 943PS and 103 kgm twin-turbo 1GZ. This 5L V12 has been lifted from the Japan-only Toyota Century, dropped into the Supra and mated to two HKS GT2835 turbochargers. As you can imagine a transplant of this nature required a lot of work…

…starting off with all the piping! The two turbos are fitted on custom manifolds, sucking air through one-off intake pipes while the compressed air is taken to the bespoke V-mount intercooler by aluminum piping before ending with the hand built intake plenums.

Check out this shot of one of the N15 Pulsar mechanical throttle bodies. Just look at that attention to detail and show-car finish!

Need I say more?

The engine work includes custom engine mounts, a dry-sump conversion with an upgraded ORC oil pump, V-mounted oil coolers, custom fuel system and twin HKS F-Con V Pro ECU’s to keep everything under control. The stock 6-speed Getrag JZA80 transmission remains but is mated to an ORC clutch and LSD.

Due to the intercooler taking up most of the space up front, the radiator has been fitted in the rear of the car, cooled by the air sucked in from a custom side intake.

With a theoretical top speed of well over 400 km/h it’s a good thing Nagata-san upgraded the brakes with massive GReddy 8-pot calipers at the front and 4-pots at the rear.  The large discs have no problem fitting inside the Volk Racing GT-F wheels thanks to their generous size, 9.5Jx19″ up front and 10.5Jx19″ at the rear.  These are fitted with Bridgestone RE-01R tires, 255/35/19 front and 285/30/19 rear.

Nagata-san took the Supra to the Nardó proving ground in the south of Italy where he attempted to max the car out. He managed to hit 358.22 km/h, slightly off his initial predictions. No doubt he will attempt to go faster, maybe on the wangan or Aqua Line!

The interior is a far more comfortable place than you would expect seeing the extreme nature of the project. All the gadgets you would ever require are all present like a navigation and audio system, Bride leather bucket seats…

…even the very special Defi Super Sport Cluster, one of the coolest dash units/data loggers on the market today.

The passenger side air-bag compartment has been converted to house the two HKS ECU’s, as well as the two Neko Corporation A/F 700 displays.

The air outlets in the rear of the car are functional, expelling hot air from the radiator.

Top Secret wouldn’t be Top Secret without projects like this, pushing the JDM tuning scene to extremes in every way. This is the first of a few Top Secret features I have planned, so check back soon to see other crazy creations from Smoky. The above picture may hint at what’s coming next…

-Dino Dalle Carbonare