5.7stepside

im, lookin for a good ls1 deal so i can jump on it and buy it. but have a few questions. 1st will my 4l60e bolt up to the ls1 is the bell housing the same as one out of a camero etc... and wireing harness and computor. im pretty sure im goin to have to pull my harnes and computor but wen i get a computor and harnes from a camero or trans am. does it have to be the same harness from that same motor and will the harness have the wiring that runs down to my 4l60e. i know ther may be some problems i will run into durning this swap is ther any thing else i need to look out for. thanks alot any help will be greatly appreciated.