The body on my Mercury is really straight, but there are some chips in the paint here and there and some deep scratches. I am not set up to paint, but I can do simple body work and prep for paint to save money. Where is the best place to buy sandpaper and sanding discs for this type of work? The MAACO paint on the car right now is not real smooth when you get up to it so it will need a good sanding all over. Also, my compressor is marginal for running an orbital sander. What do you guys recommend as far as getting good sanding on the car? I see the round pad that chucks up in a drill, but that seems unwieldy. I have a DeWalt 5 inch angle grinder with variable speed. Is there a pad that will go on it to attach sanding discs to? What else am I looking at?