I have a 2002 GMC Sierra truck with a 4.8L Vortec V8 in it now i am looking to swap that out for a vortec 6.0l lq9 or lq4. I've heard everything will bolt right up and all my computers will work (after flashing computer) i have also heard that i need to find the 6.0 out of a certain year make and model vehicle to make sure everything will swap right over easily.

I need help with what vehicle year make and models have the correct 6.0L in them to correctly swap with my 4.8L ... please lay some knowledge on me so i can find the correct motor and start making some real power!

Thanks