If it's going in your YJ, you'll want to stick with the 351W and use a C6 so you can run a Ford t-case unless, of course, you want to use all that fancy CNC stuff to make an adapter so you can still use your drivers drop D60 with a Chevy drive train.
No overdrive in the C6 but there's also no electronics to foul up under wheeling conditions.
No overdrive in the C6 but there's also no electronics to foul up under wheeling conditions.