Pere Marquette 71000-71249 and 72125-72199 double door cars with end doors
Pere Marquette 71250-71349, 72050-72099, and 72100-72124 double door cars, no end doors
Pere Marquette 72000-72049, 7' single doors
Subtract these. They trace their lineage back to the old 1920s ARA design, as do their C&O, Erie, and NKP counterparts. PM 72000-72049 did have 7-foot openings, but from the outside they looked like regular double-door cars.
