67 Dart question

A friend of mine bought a 67 Dart, today. I went to look at it, with him. It is pretty rusty, and needs a lot of TLC, but I was wondering if this might be a kind of rare car. Not a valuable car but, unusual.
It is a 2door post, 170 slant six, 904 auto, manual brakes and steering, no radio. I think a heater delete, as there is no heater controls on the dash, and an "aftermarket" heater on the firewall under the dash. Any ideas?

sounds like whoever bought it new bought the cheapest car he could. If an original Florida car would not really need a heater (except last week when I was there)

They made a lot of 67 darts, most I've seen have been hardtops.