I am new to the whole painting and prep process, so what I have is a 68 charger that has some surface rust and some rust that has eaten thru a few panels. What I would like to do is prep the car for a primer that can hold up and fight against any future rust, the car will be in a garage until I get it where I want and have time to replace panels. So my question is how to i prep it for primer, what primer should I use and should I seal the primer with something???