'70 Dart 392 Project; what direction?

Well took a little afternoon trip and snagged that D60/3.54/Powerlok rearend. Got it for $450. Confirmed 3” axle tubes and popped the diff cover and it’s greasy but everything looks solid and turns smoothly. Not a rusted/pitted as the pic makes it look.
Seller actually owns a business building off-road Dana axles and said he doesn’t need a case spreader on these typically but if you use one to use a dial indicator and spread no more than .010-.015” which makes sense why he can usually get them out with two pry bars.

Will likely order the rearend components next week when Cass gets back from a show.

Mike