Uhm, from reading all of yalls other posts, to the OP im thinking that, even though you may not want to do this, but probably even to get ~200whp out of a non-vtec ls you should probably boost it....Just, 6 - 8psi will probably get you to that goal and you wont even have to rip the motor out or build anything, depending on your engine's internal health/compression. either that or a vtec head and some unknown shot of nitrous would probably get you there too.