Tom - go to www.car-parts.com and find yourself a JEEP 999 from a late model wrangler - stick that in and be done with it.
I've become wary of interchanges outside my area of personal experience; I just don't have the data nor experience to know what fits, nor the time or money to try-and-see with big parts like transmissions.
I know I sound stupid, but I honestly don't know what "late model wrangler" means. Can you give an example year? New enough to have "low" mileage, say 50,000 or less, means it's got to be < 10 years old. That's 1995. Aren't those riddled with computers and smog interlocks and lockup converters that want interface to other systems? If it's old enough to be non-electronic, eg. 1980's, then it's likely got a lot of miles.