Currently swapping the LS4 into my Grand Prix. The market is getting somewhat better. I honestly feel like I did when I owned my DSM years ago. Pretty much everyone is doing their own home made stuff and sharing it. They have finally fit the LS6 Intake Manifold onto it. I think anywhere from 20-35 hp is to be expected. Some of the guys have been fooling with different cams. They have been removing the DoD, etc.. and the cars are making some decent-great power now. They just had a group buy on some Headers made by Thorley. Cartuning also has a turbo kit available for it. One guy is running low 11's with it but not running his max he could with it. Not bad.

The 5.3 is growing. I'm enjoying playing with this thing. Not sure what Cam I want though. Either way it's going in pretty much stock next week aside from the LS6 IM I bought to modify.