No, there are 2 types of SR pinion flanges, the larger one comes under '94 and the rest are the same size as the 3.0 9" flanges. the later (smaller) flanges can be re drilled to work the others will take real customization or will need to be swapped.

I swapped a 1999 9.5" rear axle into my gen 1, i needed to redrill the holes and machine a recess into the flange so that the bolt head/washer would sit flat.

1999 Montero SAS'd on Kings and stuff

1998 Montero trying to get a V8 Swapped