Congrats, but there go's the jeep money. BTW I'm right in the middle of my LS1 5.3/4L60E swap thats going to be great but as another poster pointed out , it's not exactly cheap. You wouldn't need the CJ harness. This build was inspired by a build I followed by Randyzzz. So it's all his fault.
So far parts alone:
Salvaged Vortec 5.3/4L60E and acc's..................1500.00
Advanced Adapters Swap "Package"....................2200.00
Painless complete CJ wire harness........................783.00
Painless EFI wire harness.................................... 899.00
......................................................total--------5382.00
I still need a fuel delivery system, transmission lines, drive shafts and other odds and ins to complete this. I'm also doing a frame off total restoration with some modification with the Scrambler at this time. My engine is also a E85 flex fuel engine but Louisiana emission laws are not as rough as some other states.