[LS short box]

I've stripped a number cars with air craft stripper. Typically takes at least two applications to get all of the paint off and then another to remove the primer down to bare metal.
Keep it away from seam and cracks. It can leak back out after painting. I do the big panels with stripper and then sand blast all the edges.
Be careful with air craft stripper, it's nasty stuff. Full face shield, heavy rubber gloves and good ventilation if you doing it inside.