For some reason I think a flywheel and clutch assembly looks much cooler than the usual flexplate. New clutch in this pic.
Before the engine was mounted in the truck, some other details had to be attended to.
The heater core was missing a tube, as illustrated in this pic:
I happened to have a heater core off a Caprice, and it was the exact same size as t he original truck one. The old holes had to be plugged, and new ones drilled, but it was pretty straight forward, and cheap above all.