No. They are different. BUT, the autos can swap bellhousings to fit the 2.6 on a 3.0 auto trans(not sure about the other way around...that would be cool)
SWB 2.6 84?-89
SWB 3.0 89-91
LWB 3.0 89-91


'88 Raider, 33" Maxxis, 2" body lift, 10K winch