That's how I did mine, only my car was clean underneath and then got blasted a second time before paint. I put in frame connectors at the same time. First I pressure washed the whole car to get rid of grease and oil. Then blasted it bare. It was quick, easy and everything bolted on the car perfect.


I blasted the bottom clean on a Sat afternoon. Sat night I welded in the boxes and frame connectors. Then Sun I reblasted the bottom a little and then did the outside body with plastic media.