Top Secret was a brand found in literal secrecy. By day, Kazuhiko "Smokey" Nagata worked at Trust, the parent company for GReddy, but by night he worked on engineering parts for his own cars and eventually taking on projects for others under the shroud of darkness. Eventually, management found out but refused to let Smokey leave the company, allowing him to continue to work after hours so as long as he kept it a secret from his coworkers. Only a year later, the doors for Top Secret were opened. After building quite the reputation for himself stemming from repeat run-ins with the law and blatant disregard for safety and speed, his trademark Supra became the envy of many in the '90s and 2000s. Now, the very same Supra is up for auction in January, and you could be the proud owner of a piece of automotive culture history. Originally built by speed-chasing legend "Smokey" Nagata, nicknamed for his trademark burnouts before high-speed runs, this Supra was way ahead of its time. Today, it's commonplace to do crazy bastardized swaps that would make purists cringe, but in the '90s, most tuning companies worked with what they had. Smokey decided that this wasn't the route he wanted to take when building Top Secret's Supra and re-homed a 5.0-liter V12 1GZ-FE engine from a Toyota Century into the Supra.

via BHAuction

Despite the auction listing the Supra as a 1994, its VIN is coded as a 1998 chassis. This means that the then-$40,000 sports car had its heart removed while still in infancy, and fitted with one of Toyota's newest creations. In 1997, Toyota released its first-ever V12 by cramming into an ultra-luxury limousine to be sold only in the Japanese market. Smokey plucked the 276 horsepower power plant from the $100,000 Century and prepared to replace the Supra's 3.0-liter inline-six. But because the Supra had an extra 54-horsepower on its replacement, some work had to be done. Smokey outfitted the car with dual HKS GT2835 ball bearing turbochargers, which were able to provide substantial power throughout the rev range. However, the tuner felt that top-end could still be improved, so he fit the Supra with a wet nitrous setup. At the time, there were no engine management solutions for something with 12 cylinders, so naturally, Smokey did what any sane person would do; he used two HKS F-Con V Pro standalone ECUs to tune the car, and then sent it to the dyno where it made a respectable 930-hp and 745 foot-pounds of torque. The Supra was also fitted with custom aero parts, including Top Secret's Super G-Force kit. It sat atop Aragosta's harmonic drive suspension, which was mated to a Roberuta Cup kit, allowing for the car to raise or lower itself 3-inches on-the-fly.

via BHAuction