Sell my Duster or 360 Swap??? Help?!?

Having a nice body on a car is way better than having one thats crappy with the engine you want. Motor/tranny is CHEAP and EASY and FAST compared to body stuff.

A nice body V8 duster is going to cost more than $2500 by a long ways, and then you'll probably end up with a 318 and want to do the swap anyways.
And even if you found a good car for cheap with a 360, you'd have to pull the motor anyways to seal up all the oil leaks.

If its nice, you're way way way way way way way way way better off sticking with it.