The only outward appearance changes so far are the removal of the bumpers/brackets, removal of the rear tail lights which are now frenched into the tail pan under the deck lid and frenching of plate in the same location.
Functionally the front suspension, motor trans and rear. Obviously the wiring is now 12 volt system. He moved a section of the firewall back to accommodate the drivetrain swap and make room for the 318. And put a mopar steering column in it--not sure what it came out of at this point.