Okay cool. So after a lot of research, for the the ls1 carb conversion, the prices the ease of install, I have decides to order almost everything made for this swap minus the 4l60e, and the ls accessory brackets tensioners, pulley system and crank pully, from schwanke. I spoke with a guy who at their shop, that this is their specialty along with engines of the lsxxx. Great price for everything harness computer fuel system headers plates hardware , then specific for my truck I ordered the painless harness to gut out my truck and install, last guy spliced into everything when he owned it, it's easier and cleaner for install. So far all of that is cheaper than just a factory harness and computer plus a tune compared. I really wanted to carb but it's just not gonna happen.