I've started my project now, 04.5 lly into an 02 lb7 truck. I've heard lots of ideas but who has actually done one? I was wondering why I can't take the lb7 engine harnes and put it onto the lly engine, egr will be deleated anyway so that wouldn't matter, and for the injectors I could rewire the plugs from the lly harnes onto the lb7. Only thing not sure about is the VVT and what do do with the wire coming out the top. This was going to be just a truck for my wife do drive so if it's not exactly like it should be for the VVT it doesent matter anyway. I have another lb7 truck thats being built now so we needed 1 just to drive. Any opinions or suggestions would be greatly appreciated.