so many have there facts mixed up. no you dont want the ls tranny in any case unless you want better gas mileage. the shorter gears are always faster.. assuming you have traction. the vtec head is not worse for boost in any way. they flow way better and handle abuse and high rpm way better. the only downside i can see is with lsvtec and turbo your gonna have 2 oil lines coming from one tap (oil sending unit on the back). but if you do it right it'll run like oem. remember.... always have it tuned