It could be both my Gen 4drs had a high altitude package or something, both were bought new in Denver Colorado.(the 89 was stolen)My 93 did indeed have a 4:88, not 4:62 though.

1996 SR From the Area 51 Skunk Works. 37"BFG Tires, 5" lift, Rock Track 4:1 Case, Tom Woods Drive Shafts, Oasis Air, Front ARB, lifted gas tank, T-max winch and lots of stuff that cost too much.