wow a t3/t4 is tiny. t3/t4 is about the size of a 16g that comes on all DSM cars. you wont even touch 200 horse with it. i have a 98 prelude H22a4 with a 20g aka t04e with a .56 a/r still a small turbo compared to a gt35r will still only make 500whp on cam2 fully built motor. you will be fine i ran an 18g for 3 years on 8 psi with no probs i had about 250 to the wheels and remember i started with 70 more hp. As far as changing stuff you will need a new exhaust manifold(will come with the Kit) and if your gonn arun a FMIC your gonna have some customizing to do with the front bumper to make it fit. also you will need to wire in a fuel management, possibly injector clips.