Aluminum wheel center caps mangled

[Jfstang]

Hi all, on my 05 C190 Popular with the Roadtrek/American Racing optional aluminum road wheels, the previous owner mangled the 2 rear center caps but the wheels themselves are fine. (Don't ask me how, I haven't a clue....) They look to be beyond pounding out.
I've been all over the American Racing site and done a search here, but can't find the right AR center caps. My caps have the three straight chamfers around the center in which the black and white AR stylized logo sits.
Recommendations or part number for the correct replacement caps?
Or, alternatively, what's the size/diameter/any other pertinent detail requirements for another set of all 4 AR replacement caps that'll fit (so they match front and back)?
I'm getting all the chassis bits (brakes, Bilsteins, flex lines, fluids, A/C etc) serviced on the rig, but these center caps catch me every time I look at 'em. Thanks in advance.