The 8 1/4 thread

mguner said

Actually I have never heard of different offset housings, only the carrier. It is just like the spacer for the Chevy rears where you shim out the ring gear instead of changing carriers. They used to make the spacer kit for the 8.25 and Dana I believe which also came with longer special bolts. The issue with using Dakota carriers is mid 96 and up have different spline count and some need different carrier bearings.

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There was different "posi" carriers for the chebby, for the taller gearset, and a M/Mouse "spacer" as mentioned. The spacer didn't prove to be too succesful, as spacing the ring-gear out took the ring-gear off it's register. Not having anything to "center" the ring-gear on except the bolts, allowed the ring-gear to wander, and eventually sheared/broke the bolts, damaging the gears.

I can't speak to any of the other "kits" avail.. specially for hipo stuff.