Mopar "Crate Hemi Engine Kit"

I dont have any personal experience YET. But I'm about to start procuring parts for a 5.7 for my 68 and I've decided that's the way I'm going to go.
It comes with an unlocked ECM and reading through the 29 page installation manual, it looks like the loom has no unnecessary plugs or wires. Just what is needed.
It basically is a 2015 Challenger setup minus all the stuff we don't have on our old cars.