I put a good stripper in a spray gun and shoot a panel at a time.
Then take a razor blade scraper and round the edges of the blade on a grinder, just enough that they won't dig into the metal.
Start with the first panel you sprayed and after it has set for a while, to let the paint wrinkle up, start to just scrape gently off the panel.
Most of the paint will come off the first try, but if needed spray the panel again and move on to the next panel.
Put down newspaper to catch what you remove and then throw it in the garbage.
Most of the paint will be gone after one days work. Wipe the panels down with prep-sol.
Then metal prep and epoxy prime the panels.
A light going over with a DA will remove any small spots left over.
ORRRR take it to a media blasting shop and pay to have it stripped.