Ok here's my situation. I'm about to purchase a complete Greddy kit (yeah I know some of you don't care for Greddy but its good enough for me) that comes with an Intercooler, Injectors, all the piping, the mani and the turbo, etc.... I'm going to run that on my stock Ls (without upgrading pistons,rods,etc... ). What boost should I run and what sort of HP would I be looking at? Later on down the road I am going to upgrade pistons and rods. Any recommended info on brands would be great fellas. Thanks.

Joey.