I have a River Raider evap. cannister skid plate + tank holder for a JK/JKU thru 2011. ALso: Viair 2.5 gallon tank. Never installed.
Skid Plate- Air Tank Skid & Brackets
(The red color is for show).
This one is aluminum- no powder coat needed. A $66 price upgrade. There is a litte confusion at River Raider. They say it fits a 2012 2 door- but it doesn't. For details (it may fit SOME 2012s) and a pic of my skid:
We didn't try installing it right away- by the time we figured out it wouldn't fit it was too late to return.
$225 plus shipping if needed. With tank (already mounted): $275.
I'll post a better pic tomorrow in the daylight.