Just happened upon your thread. I need to do all 4 of my rims like this. Would love to know the details of your sanding/polishing process and what clear you go with.
My rim was pretty rough. I bought it on ebay for $40 where new are $399. The installers had gouged the face of it around the entire rim.
I used an over cleaner to strip the clear and then polish according. I found a few write up and youtube videos suggesting this and it looks to work great. Here is one of the write ups I had found when searching.
http://www.924.org/techsection/wheel_refinishing.htm
I had to sand with 240, 320 and up on alot of areas to remove some of the damage. On those areas I worked my way up, wetsanding the entire rim with 600, 800, and 1000 and 2000 grit sandpapers. I then polished with a mothers aluminum compound toachieve the mirror finish it should have had..
I then cleared with a clear mad for wheels by rustoleum called High performance wheel paint. Had good reviews for a durable finish.