126 front and rear suspension is very similar to 123. The main difference is the guide rods attach to brackets that have two bushings each -



A crossmember spans the brackets for no seeming purpose than to splash fluid draining from the torque converter.

124 (and 201 and 140 and...) have a more independent rear subframe that attaches at 4 points. The diff attaches to the subframe, not directly to the chassis -



Sixto
87 300D