New member, looking for a car

Welcome. As in Pontiac world, 4 dr cars are more affordable. 73+ Darts tend to be less expensive since many prefer the earlier flat front, with 67-69 most desireable. Unless you find that specific car, I would look further south and west. Rust can add years and $$$ to a project. 75+ cars have good mechanical features like front disk brakes and 4 dr are safer in a side impact. Just don't put lots of money into it or you may never re-coup if you sell.