4.8 LS engines are the mighty max of the LS family. Don't rule them out because they have the least displacement.
Hot Rod Magazine was able to squeeze 1,200 HP out of a junkyard motor with stock internals and cheap turbos, RELIABLY!!
The article is posted below (click the picture below).
Back to the engine. The engine will be available with medium miles, and a warranty. Inventory changes frequently, but you will get exactly what you want for a low price! Order Now!