Your research is off as it was not an option and was standard on the 70 Mach's. Does not matter or needs to be argued since my car is inspired by a 70 and this is from the Mach registry website...The Mach 1 for 1970 was clearly different, with its headlamps moved inside the Ferrari-style grille mouth. Gone were the quarter-panel sidescoops. A honeycomb tailpanel gave the Mach 1 new depth. Flanking the tailpanel were deeply pocketed three-element taillights. Ford’s bean counters went to work on the ’70 Mach 1, deleting standard styled
steel wheels and replacing them with sport
wheel covers instead. Wide Oval Firestones put the rubber to the road. Groovy Mach 1 graphics for 1970 included finned argent panels that ran from fender to quarter, protecting the paint and dressing up the body. Inside, the ’70 Mach 1 was virtually the same as the ’69, the exception being a locking steering column mandated by federal law.