I have been looking for a 10 bolt 8.5 rear end for my 69 Skylark. I know they changed around 1971 from the 8.2 to 8.5. I found a rear end in a 72 Skylark that lookls like a 8.5 ten bolt, but it has the Ford type axles (non c-clip). My question is did GM make a 8.5 non c-clip, 28 spline rear end, and if they did is it is good as a c-clip type?