Just to be clear I am in a T124 (wagon).
The bracket is no longer pristine, but the bar is in.
I think some socket cap screws would have been better. The heads on the stock bushing brackets hits the new (larger) bracket, so a socket will no longer fit. Some fender washers would be good also, and are probably mandatory with socket cap screws.
I hit the sls lever control arm bracket with a hole saw and drilled a new hole for the bolt. Fits great. doesnt see much load anyway.
Without a 500e to compare, I didnt realize that the sls valve bracket mounts to the body in a totally different location than the wagon. So the little spacer plate is useless. I think it must mount inside the body, with studs sticking through holes in the body for the bracket nuts. If anyone needs one of those little plates, let me know.