dmk477

Hey fellas, I've done some digging and found some older threads with mixed reviews on the ISR kit. A friend of mine has recommended the kit and says many of his friends run it successfully, just looking for some more opinions. I'm looking to make 3-350hp, really hoping for 350 but understand that is pushing the engine quite a bit. ISR "claims" the kit is capable of 380, but are these numbers realistic? I was also considering leaving the factory manifold, just going a bigger turbo and the other supporting mods, and seeing where that could take me. Will the factory manifold support that type of power? Any help is appreciated.