I did mine on a rotiserrie also. As Hammered said, remove anything that could get splattered, and be sure to get the extra "H" braces needed for the floor. They don't come installed. You may want to put them on before you install the floor so that you can eliminate some of the welding on your back, with splatter in your face. Be sure to mark the cutout for the shifter and any mounting holes on the tunnel before you trash the old floor. Also, the leaf spring eye brackets mount to the floor right next to the frame rail ends, so they will also need to be removed.