I bought a set of the Dodge rear wheel well liners today, part number 82207367. Unfortunately, they don't fit. The bump stop brackets for the rear springs interfere with the liner. My Ram is an '06 3500 2wd short box (single rear wheel). According to the dealer, "one size fits all". Does anyone know if Dodge makes a different part number for the 3500 single rear wheel trucks? Thanks for your help.