I discovered (I think) that my van has the optional heavy duty suspension group option. I ordered some stabilizer bar bushing (moog K7096) and there's no way these are the correct ones. There narrow and are shorter than the bracket. I didnt have the build sheet when I ordered them, so I got the wrong one. Question is there no listing for the upgrade. I'm guessing that it would be similar to either the W250 or 350, but whick one. I'll measure the bar and brackets but I was hoping some here might know what that suspension upgrade included and of of what?