Scratch that. (no pun intended) I thought it was a 3m kit, but looking at the pictures I could find, that wasn't it. I can't remember the brand. Maybe it was the Mothers kit. Sorry, I'm no help. I'll ask my cousin.
Grab some 600 grit sand paper and wet sand the hell out of it. Then grab some 1500 and go to town until its smooth to your liking. After that, grab a bottle of the plastic polish of your liking, grab a polishing pad and polish away. If you seem to be lacking the elbow grease to polish it, stick a polishing pad on a drill and go at it that way.