Mike,
We started in earnest on your car today. We should have it done shortly.
We use 120 grit paper and then follow it up with NEW maroon Scotch Brite. It only lasts a few seconds so plan on going through a few boxes of it. I don't know why, but it has to be new or the color won't hold on the aluminum.
Don't get your wife too mad at you! I know that can getyou in BIG trouble.
David