I just did up my 9" using that method. Got me a few 2" and 3" round wire brushes on the end of my new Dewalt and went to town on my axle housing. Ended up taking off 30 years of paint, white, red, black.. man, right down to bear metal, then I hit up the housing with some POR 15, looks freaking top shelf!! I'll send ya a pit of you like, it came out PRO!!<br>-super-<br>BTW, I didn't use a grinder, didn't want to gouge it or anything... wire brush, and oh yeah, wear a dust mask, I had black snots for weeks!! ;D