Just curious if anyone has ever done a 4.3 V6 swap to an Ls1 on a newer 2000+ and if so was it a straight bolt in or was there a lot of customizing, fabrication, etc involved.. At this point I'm trying to determine what all I'd need to swap engines.. Will an Ls1 bolt right up to my tranny or is there a difference in the bellhousing between the 4.3 and the 5.7?

Computer and wiring harness required?

Any and all info would be appreciated.

Thanks!