I have a similar set up just in a 55gal barrel and have had great success on wheels and a bell housing and a few other items I could not get in my blaster cabinet. most of these were then taken out of the tank and scrubbed with a plastic brush and then I cleaned with Por15's marine clean to make sure all the oil and goo was removed then rinsed and shot with metal ready before I primed them. sure works slick. You guys should try it at least once.
Mike