Well if you havent before i dont think anyone would recommend it. But if this helps any, Jotech Motorsports in Garland is having like a sale on Rev Hard Stage 2 turbo kits, for 3500 installed and everything. 100 bucks more for the Tial Wastegate upgrade. Thats everything you need included in the kit to run it on an Ls with stock everything, safely on 8-9psi.