After peering into the area behind the dust covers and seeing the rust (good call Army)...I checked the price of the Cardone rebuilds.

I'll be installing two rebuilds today. To be 'done right' would efintely require some sort of rust removal and machining. More time than I want to invest.

Despite my bad experience with buying rebuilt front calipers (a seal blew testing them in the driveway), Im more confident in the rebuilders ability to get it right than mine on the first shot :-)