I used a cheap variable speed sander from harbor freight, 8" 3m sanding pad and 8" 3m 80/40 grit disks.
check out this link:
http://www.autobodystore.com/strip_&_paint.shtml
took me alot longer than 8-12 hrs, I had 4 layers of paint and factory primer to cut. This is why i used some 40...