Great, thanks for finding these.The 66RFE is standard with the 5.7-liter Hemi V-8 on all Ram 2500 models, in 2012
http://chryslercatchall.wordpress.c...uty-gets-a-six-speed-auto-for-2012/#more-2843
http://www.thetorquereport.com/2011/06/2012_ram_hd_pickups_get_new_si.html
Shop manual
More then you need to know about the 66RFE
http://www.mopar.com/ram/2500/2012/shop/335781/148/