I just ordered my PML rear diff cover. http://www.yourcovers.com/ I really like the idea of extra capacity and a fill/drain plugs + better heat dissipation. I ordered PML part number 10361-B (black powder coat) for my 2012. Nice looking piece! :-laf The last owner of my truck just had the diffs serviced.... so, I may wait a few more miles before the install with fresh fluid. I will post pics once it arrives and I'll show the install and finished project once I am done.