Per Frank from Oz (shall we just say Frank Oz?):

Diff Gearing-

GenII 3.0L = 4.625 or 4.875 (you probably have the 4.625)

GenIII 3.5L = 4.30


1991 Montero LS 3.0 5-Spd LWB 31" Bridgestone Dueller ATs on stock rims, tan/tan interior/exterior
1986 Isuzu Trooper 2.3 5-spd - partially disassembled, tan interior/dark blue exterior