Produced after 1971? So that would exclude the slant 6, the 318, the 340, and almost the 360......but with that said the only decent engine after 1971 was the 5.9 Cummins but wait, whoops, they didn't build that.......so I guess my answer would be no and 100% believe that pre-72 Mopars should NOT have any engine platform that wasn't available in the cars.
