I'm thinking of possibly trading my 65 Dodge dart GT blown 440 for a A body or b-body four-speed.

So why the potential swap? I realize you're not committed but why a swap now? I'd get your boost/ignition controller and enjoy the car for a bit. I've had my 68 for about 27 years and have started to entertain the thought of selling it. Don't have room for a 3rd car.