I had my car done with plastic shot, I took everything off. They went over it after with sand to prep for paint adhesion. Didnt hurt the metal anywhere except the roof that i have found. I read to avoid soda.

2017 Challenger R/T Scat Pack Shaker
2021 T/A 392
1970 Challenger R/T 383,727, 3.55, (Wife's car)
1970 Challenger R/T SE 440-4, 4-speed, 4.10 Dana
1972 Dodge Demon 396 W-2,904, 4.30, 10.660 @ 125.85
2020 Hellcat redeye