Flip job!
Although I am sort of in the camp of correctness, given the $$ and time to do so, I would love to get an older unrestored car like the Dart in question here, and completely do what I would have done in the 70's had my Grandma given it to me then. Jack it up, put some big Mickey Thompsons on the back, a big oversized carb on an aluminum intake, headers, cover the steering wheel with a JC Whitney grip, some house shag, and a big Sparkomatic stereo system with my speaker wires running right over the carpet. Yea, that should do it!!!
Then, I'd drive it like I would've back then, with all my buddies hanging out the window, yelling at chicks, beating and bombin' it up all over town, without concern for the model, body style, originality or anything but the moment!!! Oh, but that would be modified, wouldn't it??? Heck, I don't care, I just want it my way!!!! Geof