MPG Motor Magnum vs. Hemi

Where are you going to put the gastank?
The wagon's stock tank is designed upright in the left rear fender. You'll have to sacrifice the rear 'basement' sparewheel area.

Don't forget the transmission detent spring and lever has to changed/modified for the pushbutton gearselector to work properly.

I also own a '62 Chrysler New Yorker wagon.
It's my backup car in case the Dart is out of commission.