[HardcoreZ28]

If you've never done it before I'd start with 1500 and work up to 2000. Use LOTS of water and put a little dish soap in it. Do one section at a time. Put the paper on a rubber squeege and keep a second one handy. Sand an area and wipe the water off with the second squeege and you can see if you have any areas you didn't get. Be VERY careful not to go through the clear when you're sanding and also when you buff it back up after. It's easier than you think to screw it up. Good luck!