After reading this I should ask 50k for my 72 duster

That whole car is a mess.
The engine bay wiring looks like hell.
Greasy unpainted engine supposed to have been rebuilt?
Alternator mounted wrong: Belts are routed wierd.
Non stock radiator overflow jug. No fan shroud.
4 Wheel disc brakes? Sounds like the work of a NON enthusiast simply "parroting" what he heard somewhere.
Hideous seat upholstery.
Unclear about asking price of car.