Sorry but I don't drive a ST turbo celica, even if I did I would still walk a TC. And I really don't know what makes you think that the Tc was made for boost. It has vvt, thats not really boost friendly. I think I'll stick to my retro line of cars. Besides for 3000$ or so, trd offers a supercharger that would only add 40 hp to the tc. Wow, thats about 750$ for every 10 hp. Not really a great bargain.