Can't remember when they switched to the 8" rear. There is a 71 6cylinder parts car available in the area and need to know if it was the 8" rear or the smaller 7.5" (I think that was the size). Thanks.
The 4-lug has a different taper at the end of the axles....so it will not work for a 5-lug set-up. if we are talking about the center "pig"...they are the same.