Finally have the sway bar installed. Addco made a larger anchor plate for me with one side extended out to 7.5 inches to form a trapezoid so I could fully extend across the bottom of the trailing arm. Be easy to make one. I trimmed it to fit. I also asked them to not drill mounting holes for the trailing arm and I used existing holes-a 1/2 inch hole toward the spring and the hole the ebrake bracket mounts to which I drilled out the 3/8″, marked the plate and drilled the mounting holes. The trailing arm is fully boxed and welded with a full plate on the bottom, internal V shaped pieces side to side at the holes providing full vertical support for the mounting bolts as well as a small plate at both ends. Provided ventilation for all cavities. Won’t be on the road until Spring and I find out how the bar works, hope it’s not too much cause there doesn’t appear to be any other options.