440 in 72 Dart Swinger?

You can fairly easily swap a 440 in to a 72 Dart. Most everything becomes harder/tighter to work on since the BB is larger than the SB. What is the purpose of the car and why do you want to switch? It maybe cheaper to actually build the 340 or even find a 360 than to switch to a 440. By making the switch you will need a minimum motor mounts, new radiator or a BB passenger side exit water pump, trans, headers/manifolds, etc.