ECU / harness salvage motor question

Mopar Perfomance sells a 5.7 and 6.4 Hemi crate engine, they also sell the proper wiring harness / computer to make it run....
Mopar Performance 77072454AB

My question is what (if any) salvage yard motors (year) will these harnesses / computer control.....? I can't get a definitive answer from anyone I have asked......
I know I would have to run an old school auto or a stick as the crate engine harness has no provisions to control a late model automatic.
My plan is to get a 5.7 or 6.4 from a salvage yard and one of these harness to run it...if that is possible. Maybe I am wrong but it looks like it would be simpler than a Hotwire rig....