I cant swing a turbo setup this winter, but, I think odds are high it will at least have 4.8/5.3 by spring.
A 5.3 with a cheap stock takeoff cam(from an actual LS motor) should make 300 something at the wheels through the auto, which I'm sure is a
lot more than it makes now.
I need to get out somewhere to have it weighed and dynod in it's current state to see what the winter's changes bring.
Testing of stock LS cams in the 5.3 truck motor:
http://www.hotrod.com/how-to/engine/...st-comparison/
In theory, it doesn't take much to make it a quick car since it's light.