Instead of buying the kit I did mine with 1000grit, 1500grit, and 2000grit wet sandpaper from an autopart store. For polish I used some 3m plastic polish we had at work.
See Post #33 in this thread for pics of it:
http://www.subaru-svx.net/forum/showthread.php?t=54507
First time I did my lights I used "Mothers mag and aluminum polish" instead of sandpaper and polish. It worked ok for taking most of the yellow off. '
Pics here:
http://www.subaru-svx.net/forum/show...2&postcount=12