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?