Stripping paint and prepping car for paint

We used some stuff that's cheaper than aircraft. Car has factory paint, 1980-ish respray, and recent **** respray, the stripper took it all off in 2-3 coats with scrapers and some elbow grease. Just be careful, the ****'s nasty. We tarped the whole garage floor to do it. Protect any soft parts - rubber, plastic, vinyl, etc.