Finally there is the front end & LBP discs. The expensive new stuff is of course out there. I see mention on here of a taller spindle from later cars, and various "digs" about bumpsteer. I searched "disc brake conversion" and read more than 400 posts. I still do not have a clear picture of what vehicles are good donors for that swap - "cordoba" came up a few times, but I have not seen one of those for a decade. The local yards around here have almost no RWD Dodge/Chrysler/Plymouth stuff.