Actually, I have made adaptors to match the CVs, which are the same as the hub flange. I've also made one adaptor wider so the shafts are the same length. I'll have to dig up what they are made of
That way I can use the same 100mm CVs either end and don't have get get expensive custom shafts made up, just a shaft... I've also equalled out the offset so I don't have to have different length shafts