the guy above me is wrong.my bro's friend got his rsx into imported tuner. he didnt rebuild his engine.you dont have to rebuild the whole thing, that s only when you are gonna use a big turbo, if you are gonna stick with a small one, then you just need these things1.tubing2.turbo(duhhhh!)3.intercooler (optional, but recomended)4. exuast manafold (for turbo)5.did i say tubes?6.a tuned ECU(so your rsx will run better with the engine running at the best it can)7. oil pump8. oil cooler9. oil lines10.a boost gauge11. me, when your going 200 on the freeway