I don't see many around Massachusetts but.....
...when I think of old unrestored Mopars, I think of 1 car. Might be interesting since you're from Canada (Sorry, not sure what part you are from).
About 20 years ago, I used to drive up to Montreal a lot and after going through the border of Canada, I forgot what highway leads to Highway 10, (I think it was 133?), about 5-10 minutes going through the border on the right hand side there used to sit a white 1970 Plymouth Superbird on the side of the road. I used to see it almost everytime I drove up. Once, in the next house over was a Grabber Blue I think Boss 302/Mach 1.
Sorry, not a Mopar but.....
Several months ago, I was getting gas, just looking around. I saw a car carrier with several cars on it. I thought, "Dodge Caravan, Grand Prix....60's Mustang?" I looked closer from where I was and it had Shelby tailights and center exit exhaust! I thought that was weird so I got in the car and caught up next to the car carrier. The Mustang had faded Acapulco Blue paint with a wide faded yellow stripe, about 6 inches tall going down the side. The car was on the top level of the carrier so it was hard to see the top. I followed the stripe and it said "GT500" near the nose. I then saw "428 Cobra Jet" emblems on the side. The car looked like it had the original paint but had a little primer on the passenger door. It had the 70's style side pipes with rust patina on it, looking like it was pulled out of a garage after many years of storage but since it was on the top level of the car carrier, it must be able to move on it's own power. I pulled forward of the carrier and saw the nose and saw wide chrome trim and concluded that it was a '69/'70 Shelby Mustang GT 500 with the 428 CObra Jet. SOrry, not a Mopar but it was so cool to see that car on the car carrier in a survivor sort of state.