This is what I think. Greddy is developing a turbo kit for the 350z which claims to bump the horsepower up to 350. Toyota knows how to build an engine that has 100 horsepower per liter. So if the Supra is equiped with a 3.5 liter engine thats 350 horsepower stock! the 93-97 tt was only 330 horsepower. Could you imagine 2004 Toyota Supra 3.5 liter VVTL-I!! The twin Turbo kit will come later.