I did a lot of my panels off the car, doors, hood, fenders, trunk, etc... but I did use it on the roof as well. Just dont pour the stripper down the body joint lines, you can clean those outer edges off w/80 grit on a DA easily later.

The trick to stripper is washing the panel afterwards extremely well, make sure its all gone then by the time you've gone over it w/80 grit, wiped w/wax & grease remover a few times it should be fine. Dawn dish soap is an excellent de-greaser & if any got in the panel gaps I'd scrub them out with a that first.panels off the car is easier though you may not have that option.

One other thought, if your going for an overall repaint I checked w/a media blaster co. once on an AMX I looked at buying & they wanted about $800 to give me back a completely stripped shell - not a bad deal.