Garage find 340 4 spd Dart... keep it 440/727 or go 340 4 speed as OEM ?

Thanks... the reason I posted this up is due to some heat I was getting for not putting the car back to its OEM config. since these folks know I have all the pieces to do it... maybe also it seems to be a somewhat rare car up here North of the border.. about a 100 4spds as the rumour goes. I just might sell it.. All the best !