how can i make my 350z go as fast as an modified/tuned supra or an evo ix?How can i built up da engine? ??

You have a VQ35DET engine on it..theres alot of aftermarket parts to make it go faster than the other cars u mentioned. force induction alone is offered by two good company..HKS USA & GREDDY USA.Intakes, cam gears, pulleys & cat-back exhaust r other parts that r widely distributed. And if u have a 07 350Z with the VQ35HR on it, GREDDY have aprototype 4.2 stoker kit, a prototype HR intake manifold plenum that u can call & ask them. You can put two turbos & dual intakes on the 07 Z.