91.5 to 93.......
had intercoolers and cross-flow radiators. They were rated higher in HP and torque in these years, too, but I'm not sure how much. If not mistaken, 89 to 91. 5 had 727 non-OD trannies, while 91. 5 to 93 had the 518 OD (46RH) (Correct me if I'm wrong, guys). For standard transmissions, they all had the fairly troublesome Getrag 5 speed. Some have had good luck with these trannies, but a lot of people have swapped them for NV4500 or NV5600's. If you are looking for a 4x4, they were all equipped with NP205 gear drive transfer cases (Good Case!) Good luck on the hunt.