I purchased Brian's used A-arm skids from his 2011 in the hopes that Toyota hadn't changed much even though Ricochet gave different part numbers for the 2007-2009 and the 2010+ A-arm skids.
The end result is that they fit with minimal work. $1.20 in some shorter 2 1/2" stainless 5/16x18 bolts and everything bolts up just fine. The skids themselves were perfect, but a few of the bolts were too long.
I just wanted to put it out there in case anyone else comes across a good deal. I assume the older skids would work on a newer truck with long bolts as well, but that's just a guess on my part.