just found out a major difference between my '72 mav and my '77 floor pan is waaayyyy different. I have mopar E body seats (challenger,cuda) in my '72 these were pretty much a drop in... missed factory holes by a 1/4" now... am trying to do same with '77 drivers side is fine passenger side has a LARGE bulge down side of trans tunnel for cat. convertor... rust free floor is about to see a saws-all any one got a better idea hate to cut it but I will if I gotta also... anyone close to manassas va have a parts car that I could hack a piece of floor out of ? want an early car... no cat thanks Jeff
you could look for bucket seat tracks from a 75-77 maverick/comet(with the bulge) and adapt them to whatever buctet seat you wanted to use.
I have the inner bucket seat track for the pass side, that accommodates the bump. Would gladly trade for an earlier non-cat track of equal condition.