You should know that LS7 is too weak for boost so thats what you need to buy cause it loves spray.

Also, kidd's a .

 

Depends on what you want? We just finished building an ls2 N\A with just under 500rwhp. My car on low boost is doing 590/590. There are a lot of different combinations you can do. When we finish the twin turbo GTO I will post up some Numbers!