Here is some info which may be helpful:
Sway bars Limited- Front OEM 25mm
Rear OEM 19mm

SRT6- Front OEM 28mm
Rear OEM 19mm

H & R- Front 30mm
Rear 20mm

The numbering for the H & R parts if ordering as a set is different in the American market and the European market. However, the sway bars are they same. American 72769, European 33769.
I have both sway bars here at my house. Bought on ebay from Germany. The actual number on the bars are, front 33769HA VO, rear 33769VA IM.
To install a new sway bar on the rear requires you to drop the carrier frame and that is not easily accomplished.