Interesting to see what the rest of the powertrain looks like. In the later '80s, there was a white Dodge 600 convertible that was at Mopar Nats. RWD 440 TF, all "built" well before any commercial frame/platforms were ever thought about. On the outside, it all looked stock, other than the tastefully larger/wider tires that hinted at something else at play.
In the case of the PTs, which were originally a part of the "Personal Transportation" Plymouth concepts, a more sane variation might be a 3.6L PentaStar, the prior LH-series 3.5L V-6, or a SRT 4cyl. HAVE to have the underhood items oriented toward 100K+ maint schedules, other than oil and filter changes. The GenIII Hemis would at least allow better spark plug access.
Dreams + funding + free time = some "different" vehicle modifications. A truck V-10 might fit nicely in my '80 Newport, but I didn't have any need for that sort of thing when the stock 360 just needs a few upgrades to make it work better. BTAIM
Enjoy!
CBODY67