You should checkout CaptKaos' build thread. He's pretty deep into that swap already. I can tell you that you'll need motor mount adapters, pilot bearing spacer(depending on what trans you use), a wiring harness from a donor truck(you can find the 5.3 harness on ebay pretty cheap), and a ECM(computer). I did the swap, but I put a carburetor - now I kinda wish I had put fuel injection while I had the chance. Either way, you'll get tons of "cool points" when you pop the hood and show people what's in there. Good luck with your swap.