I wouldn't think Jeep produced an auto trans frame specifically. There are differences in the motor mounts for the 4 and 6 bangers. I would rend to think your should swap over if the motor mounts are the same.
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184