Had a Dart in the early 80's, very strong engine often used by early drag racers, but in the Dart the TR gearbox was it's weak point. I recall the Police models were all autos as they wanted something to catch up with those miscreants on the early M1, probably also stronger than the manual.
Mine was certainly fast once eased off the line, I'm told 80 in 2nd, 110 in 3rd and 130 in top was possible and I couldn't possibly comment! Proved to be very fast cross country transport.
I agree not everyones cup of tea, but to me one of those cars that is actually better looking in the flesh.
