I have a 5 year old Metro w a 470 rac Vac. Two mounting brackets fell off and I need new ones, but the dealer can't find a part number. there the two brackets closest to the engine, one on each side. They are simply stamped out strips of metal that has a hole for a bolt to go through and it goes under the metro frame and pulls the trac vac frame down on the Metro . No holes are drilled into the metro and this is a dealer mounted unit. Anyone know what I'm refering to?