MJ's 71 Beaver (Dart)

Looks like a great starting point. Not too many unmolested 71/72 Demons around anymore.
For those that don't know the BEAVER was the other name that Dodge was thinking about using.
Glad the Demon name won .
As far as cooling the 383 you might get by with the radiator you have, but may find the lower hose is on the wrong side.