I guess this is for BadSRT2005, I have the big brake update on a NA with the SRT rims, bent a front wheel and need to decide if I want to replace that one SRT wheel or go with aftermarket wheels that can be replaced if damaged. The NA wheel will not clear the CLK500 sport caliper without a minimum 12mm spacer. The SRT wheel only needs about 3mm to clear that caliper, of course the spacer has to be hub centric and I am trying to minimize the size of the spacer. So with your front Millinium wheel how much clearance between the caliper and the spokes? Looking at my stock SRT it looks like about 20mm between the upper caliper and wheel. So could you check yours and see what it is? If greater than 23mm the Millinium might go on with no spacer for the CLK caliper!
My NA coupe is lowered so I am trying to keep the tires inside as much as possible, more info on the installation is on the brake thread that shows my 345mm front disk.
Dan