I'm thinking 72 would probably have a forged crank anyway.

Having disposed of a couple campers, pull the aluminum off and scrap that. Part lout appliances and fixtures, some can fetch a few bucks from camper restoration guys. Like 100 plus for a door lock with keys. Some lights might hit 100 as well. Dumpster or fire for the wood.

Once down to the chassis, flip onto side, cut crossmember and engine falls to ground. BTW, axle and brakes are also sought after.