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I also don't know if the pinion shaft diameter is smaller on the later locker.


Just measured the pinion shaft end diameter on the locking diff I have with 4.272 gears (assumed '97+) and it's 22mm. The shaft diameter on the '97 open diff I have is the same. If that helps.

However...what Michael said <img src="/forums/images/graemlins/kewl.gif" alt="" />

'97 Montero 'LSR' - 4.6 gears & factory rear locker, 33" Procomp muds on 15x8 steelies, 50mm coil spacers, T-bar crank, Airlift, sans rear sway, 50mm rear frame & fuel tank lift, Aisins, ARB front bumper + 10k lb winch, 50mm DIY body lift, rock sliders, cut rear quarter panels...