Yeah Ive got the 3M one for a drill.
Spoke with Barry at SPI and came up with a good plan. Sand to primer with 180 grit except in areas that need metal repair. Prime with epoxy, filler, 2k primer, sand, primer, sand, ProSpray base coat and SPI Universal clear.
I like this rather than stripping to bare metal since most of the paint is solid. Best customer service Ive ever seen, and he likes Datsuns too!
Gonna use the 3M disc on the filler and rust, then an orbital sander with 180 discs to hit the rest of the car.