DA Sander

No advice on a DA, but since you will be doing a lot of hand sanding in the engine compartment......check all of the spot welds to see if any have a jagged edge. More than once, I've had a jagged spot weld rip a hunk out of the sandpaper, and subsequently my finger! Now, I take a few minutes to look for them and knock them down with a die grinder. The jagged ones are usually around the shock tower. Good luck, and this has been a public service announcement! :D