A neighbor had a '69 Judge, RAIII, 4-speed convertible. He pulled the RAIII and put a '67 Catalina 400, low compression with a QJ, duals and TH-400. He was running back and forth to Ft. Meade and wanted economy. He changed out the rear for a 3.23 posi.
He ran it that way for a while and then sold it to his cousin, Stanley, who lit 'em up at a stop sign and lost it, T-boning a pole.
His cousin then bought a '65 Le Mans with a 283/350 combo. He asked me if I would swap the 400 from the Judge into it. I told him the Judge could be easily fixed but he wanted the '65 (It had a GTO hood
). I pulled the 283/T350 and rear out and he gave them back to the guy he bought the car from. I put the drivetrain he'd been running in the Judge in it. It ended up being a nice car and a surprisingly good runner. I took it to a garage for alignment and inspection and the guy took it for a road test. When he came back he was all smiles and asked me what it had in it. I told him it and he shook his head and said, "That's the best running car I ever drove!"
The Judge was junked and 6-months later the Le Mans was sold for $100 to buy a van. Stanley had moved to Passaic, NJ and discovered Marijuana. He had paid me over $700 to do the swap and it was all done right.