Nate, not sure if the CJ7 is the one with the shifter in the top cover of the trans or not (as opposed to on the extension housing like everything else but the Astros) but that might not be a bad idea if you can find one with the apropriate case.
As IIRC the Jeep 4X T5 case is the shortest T5 case there is (measuring from where the belhousing would bolt on to the back of the trans where the T case would bolt).
Still NWC but at least it would accept the D300 without an adapter.
Is the D300 the correct side drop for your front axle?
If not a 231 might be better (IIRC Chevy had the left drop and Mopar / Jeep had the right drop).
Good luck, and cool ride.
