65 Dart factory tach

Does anyone know if Mopar offered any factory or dealer-approved tachometers for the 235HP Dart engines? I’m pretty sure they didn’t, but would just like to know for sure. My original 1965 Dart Go-Go (4 speed) had an RAC tach mounted on the dash between the steering wheel and the pillar. It was a very clean installation that never gave any problems, although I’m not sure how accurate it was. It was on the car when I bought it off a used car lot in September of 1966.