Kelmark differential reverse ring & pinion set up...Who can

[Andria Raine]

Does anyone here know of a reputable individual that can properly modify a Corvair differential case, install the Richmond reverse ring & pinion with a four spyder carrier for a Kelmark Mid Engine set up?

I know individuals that I can trust to set up stock Corvair differentials, but feel that with the scarcity of the Richmond reverse ring & pinions these days, I don't know if they are experienced and or knowledgeable enough to this take on this procedure.