Holy shit! If you type “V12 Supra” in google, this is what you get!
Top Secret’s cars are gilded always and consistently on the good side of ridiculous. They specialize in producing street cars that take to the tunnels and bridges around Japan at triple digit speeds that begin with a 2, and have a history of doing zany things with Supras. A few years ago they shoehorned in a Skyline GTR engine. This year, they installed the only production V-12 made in Nippon, the “280” horsepower 5.0-liter 1GZ-FE installed in the Toyota Century, an understated, retro-cool Japan-only sedan sold to those who are driven rather than drive. At $97K a pop, Toyota doesn’t sell many Centuries.
Top Secret bolted HKS 2540 turbos to each bank of six cylinders; the resulting antics produce a claimed 800 horsepower and 500 lb-ft of torque. Top Secret installed its own Super Dampers, body kit, and exhaust system, as well as giant Volk wheels and eight-piston calipers.
Slick Rick was right!
edit: 
Toyota Century. I can totally see someone named Boss Takiyama being driven around in that. JDM B/A