So I just got a 25mm Boss Sway Bar CR3Z 5A772-S and I thought I might look into rear springs and shocks while I am at it. A guy on Ebay is selling Boss takeoffs but the part numbers seem to match any rear Mustang GT springs and shocks from 2012 to 2014. What is interesting is the takeoff number is BR33 18080 BC for the shock. Ford does not sell that shock and they say it should be BR3z18125E for Track Pack. These are sold by RockAuto for about $30 each. Right now it seems the only real change in the Boss rear is the 25mm say bar vis 24mm. Then my car was made Aug 2013 but it has a very high build number like it was actually a 2013. The window sticker clearly states 2014. I purchased it Feb 28 2014.