According to all the research I did when looking for a 4-wheel power disc brake conversion for my LeMans was just like mentioned above, if you are wanting to use OEM original 14" rims (regardless of style Rally I, Rally II etc.) unless they are from 70 forward, there is a very good chance that they will not work. In my case, I have a set of repop Rally IIs and most mfg. claim that if you are using repop 14" rims, they will work. Mine also needed a bit a grinding on the brackets for the fronts, and grinding on the calipers for the rear...