UPDATE 2 with DETAILS of What Broke -- Replacing rear bearings on a Dodge pickup?

From : ignoramus937

Q: yeah you would need a replacement from the dealer mopar or fabricate one sheet metal. tony on sat 23 sep 2006 124808 -0400 tony al2001block@optonline.net wrote when i look at the piece it looks like one of the side adjuster locks broke off. if so that would throw the ring gear adjustment out of whack. and so do i need a replacement for it or what i tony i decided to take pictures as i go along. see http//igor.chudov.com/projects/automotive/drivetrain-noise-in-dodge-ram-1500-pickup/ some findings as i opened up the differential. 1. it is full of gear oil. means my oil change 2 years ago was successful 2. on the bottom there is some amount of of like 100 grit metal dust settled down. 3. there was one foreign object on the bottom see http//tinyurl.com/zr8zg 4. the gears and such do not seem to have any unusual damage. i .