yeah but being they were "factory" in another Jeep product I would think that it would make them a "closer" sswap. Mounts are gonna have to be welded to the frame regardless but injector plugs, sensor plugs computer plugs etc are more likely to directly swap out with the "right" stuff for both the Jeep itsel;f and the engine; and being that they used the same transmissions (other than the casting itself; I know the bellhousing pattern is different)
but the same model trans can be found that will work with a Small block; it will be the same length so driveshafts would match up, the T case would mount up in the same spot, and the same one could be used, as with the 4 banger, less hassle overall. snd it'll keep another damn Chevy motor OUT of something it DON'T belong in! A Jeep is not a GM product; so a GM engine does NOT belong in there!! I absolutely HATE that; Chevy motors in damn near anything.
GM used to say "Keep your GM all GM"; I like "Keep the Mopar ALL Mopar";
failing that, if you absolutely HAD TO put a different manufacturer's engine in there, I think I'd rather see a 302 or a 351 wind up in there.