Trying to get caught up on posts when I realized I hadn't mentioned the rear sway bar reinforcement. On these e24 and e28 chassis, the sway bar mounts tend to pop off the car easily. The rears are just spot welded on, and the fronts, while a bit stronger, don't hold up to larger bars. Both the fronts and the rears were reworked for strength.
The rears needed a few extra bracket pieces to help connect them to the frame. The stock bushing brackets were retained for now:
The fronts were cut off entirely and new brackets welded to the frame that allowed for the use of off the shelf Energy Suspension sway bar brackets. The stock bracket is barely big enough to accomodate larger bars, as a result the bushings tend to be really thin.