I am looking at picking up a 2019 5.7 out of a Challenger and possibly putting it into my 73 Challenger. Will the Mopar crate hemi computer kit control this motor? How tunable is this computer?

Yes it will. There will be a possibility that you have to extend the wires going to the alternator.

You can hook up any tuner you prefer on the OBD. HP tuners, Diablo and Sykedecutuning. That last one has a lot of options and variables you can change.

I have a 2013 Jeep SRT engine and would like to buy the mopar kit as well, however diyhemi.com will offer a kit at the end of this month.

Join "3g hemi swap" page on facebook and add the "diyhemi" page.