turbo all the way, sc's are limited in hp and so is all motor, go low boost and then find a cheap bare block, that you can build in your spare time, and build it to take alot of boost. that way your not out a car for a long time.

As for it being a sleeper, don't add three story wings and a big body kit, after all they don't look under your hood at the light. then just get a recirculation fitting for the bov and route the wg dumptube into your exhaust system.

get good stuff where it counts, wg, bov, turbo, fmu, and skimp on shit like i/c piping, ebay intercooler, couplings.