dude save your money and boost the gsr. I bought a CHEAP turbo kit for like 600 and by the time it was all over with and tuned on my b16 i have spent about 1700 or 1800. it was worth the money and runs like a champ! you get what ya pay for especially on your tuning. If you wanna cut cost you can run a cast manifold and ebay bov and turbo/intercooler but dont skimp on the important stuff like fuel system and tuning etc............mine makes 227 whp on 6.79 psi and that is pretty quick. the boosted gsr will easily get you to 250 on 7 psi i think..............boost is a drug! DO IT