All of the OEM flares for the 1500's and 2500's are the same. Bushwhacker also makes an OEM copy. I'd suggest searching EBay. I was able to find several new OEM flares removed from new trucks. Just took a couple weeks to find a white set.
2012 Ram 2500 4x4 ST Crewcab, Cummins 6.7, RCX 5 inch lift, 20x9 KMC XD Spys, 37 inch Nitto Terra Grapplers, H&S XRT Programmer, MBRP exhaust