I don't think the "rat muscle car" has to be primered, if anything faded or scruffy original paint is likely more true to the heart of these cars. I know I like it better, that "lived in" feel as opposed to the "made to look rough" or some might say "poser" style.
I'd rather look at crap paint than primer any day, or even worse.... like the honda kids do, 40 spots of primer on a car that had a decent paint job to begin with. Yeah, all that primer looks so much better than that one stone ship ya had......:angry7: