Hi all I’m a new member after some advice. I’m using a Sierra diff 3.77 for oval track racing and need a lsd for it. Crown wheel is 8 bolt. Standard Sierra crown wheel 10 bolt. Lsd will not fit middle of 8 bolt crown wheel. I could weld it to locked diff but that would ruin a rare diff has anyone no of a lsd that would fit this diff or had a standard Sierra lsd lathed to fit. Any help would be appreciated. Ian.