I finally got caught up on other tasks and got the SLK55 rear brakes installed on the Aero....
It was a pretty simple project..... trim the heat shields so the rotors will clear, a little filing on the calipers(that I just painted!) to get rid of a small interference on the mounts on both sides and tweek the heat shields away from the rotors...
I took it out and did a break in on the brakes and I am very pleased..... the car seems to much more in control when I do a near panic stop... no veering or wobbles, it just feels like all four wheels are planting themselves solidly on the road... here are a couple of pics