That's exactly why, when messin with this stuff, I cannot recommend Cass at Dr Diff more strongly. He will tell you exactly what you need to go with what. He is the reason I have a completed Ford 9" rear end on the floor ready to go in Vixen. Chrysler 8 3/4 housing ends, small bolt pattern 10 X 1 3/4 brakes. It came out real nice.