I was thinking of machining up some aloy mounting brackets that would bolt to each side of the centersection (where the bells bolt on). These would be bolted to brackets welded to chassis cross members under the diff. That would be support for the diff and and anti rotational device all in one.

The axle tubes would be attached to the chassis uprights like a normal diff and then the whole thing would be fixed in 3 places.

I was thinking a steel plate in the base of the seat where it goes over the quick change.

Cheers

Michael