HO 4.0L to 89 AX-15 swap?

[500-comanche]

Ok guys, I need a little help with my memory. It looks like I will be resurecting the MJ after all. It's an 89 that needs a new engine. It has an AX-15 and is 4x4. If I wanted to go to a HO 4.0L do I need to watch out for one that was matched up with a 5spd? What would need to change if it was an engine out of an xj with an AT? I used to be pretty well versed in this stuff, but I guess after 2 yrs and a new born baby my memory is shot.

 

Thanks

[cracker]

The motors don't care if it is mated to an auto or a manual. The motors are the same (although the throttle body can vary between an auto or a manual).

 

An HO would require you to rewire your whole vehicle for it.

[Pete M]

what's wrong with the current engine?