68 Dodge Dart

Hello guys, My Father and I recently purchased a dart on craigslist from a local muffler shop owner. His friend was restoring it but lost interest in it. I don't know much about the car so i cant tell if its just a regular dart or a gt/gts. It had a slant 6 in it but was replaced with a 318. I would like to know any information on the car that anyone can tell me, including how to fix some parts. I have read a lot of manuals (mainly Haynes repair manuals) on body work, painting etc. It has a dented fender and i want to know if it is worth my time to hammer it out of just replace it, and also has an ill fitting door. It has two bench seats which i have not seen on darts before (maybe it was a sedan model or something). Anyway, thanks for any help/information/experiences you can give me with the car.