My squeal is fixed. As well as some of my handling problem (the rest will only get fixed by the suspension rubber replacement). My brake rotor moved a cm in and out (toward the diff) on the one side. I have a trusty mechanic who usually does VW. He was reluctant, but agreed. He said it's all the same as a VW as far as rear bearing and hub.
So here's the list (all rear) (All parts OEM, except Hub which is OE and was only $2 more than OEM):
2 rotors, Balo
4 pads Textar yellow box
4 EBrake Shoes, Lemforder I think
$550 parts and labor
1986 300E Anthracite + ECodes + MB Mileage Award