Are dart sports mostly gone
I'm pretty sure that Chrysler made more Dusters than Dart Sports over the years, and rust has been a problem on both models. But Duster styling remained more popular and that kept more of them in running condition. Besides the front clip, taillights and minor details, they are the same car. When I got my race car, it was a Duster. I already had plans to convert it to a Dart Sport when a return road fender bender accelerated the change. I'm in the minority as far as Dusters and Dart Sports are concerned but overall I always liked Dodge styling better than Plymouth.
The Mopars with Big Daddy car show/swap meet in Ocala, FL always has some Dart Sports. I never did a count but I'm sure they are outnumbered by Dusters. As the number of older cars decline, I guess the quantity of certain models will vary based on region with some disappearing completely.