Lots happening with this build, finally got it running! Unfortunately the PO didn't know the difference between an internally and externally balanced engine, and I didn't bother to check
Boy does that make a difference! So I got the pleasure of dropping the transmission and installing a balanced flywheel and damper.
Also had 2.5" dual exhaust run to a pair of Flowmaster 50 series mufflers. I'll get the tailpipes installed once I know where the bumper and hitch will fall.