the duraspark ignition is differant in 1975 to 1976 and changed again in 1977, its in the chilton manual !! the quick disconnects will plug with each other but the wires are inverted !! for 1970 thru 1974 its better to use the duraspark II wiring harness and blue grommet control module and try to get it motorcraft !! its more reliable and has more dwell than the generic types(cheap).
