Used to paint years ago but since I'm not current on primers I have a question. I have a car that is mostly sanded down to factor primer and a small section that is bare metal. The factory primer is good with no issues. The question is a 2K primer or something else. The guy just wants the car primed in a gray color and intends on driving it for a few months before sending it to a regular paint/body shop. We live in a very dry climate so humidity is not an issue here. Can I get some suggestions?