When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
FRPP lowering springs on the 2011 require the 2010 GT500 Strut mounts. Those mounts don't fit the 2011 struts due to the spindle length. You need struts, mounts and springs.
So unless my car came stock with the GT500 Strut mounts ... I didn't have to change anything I put my Ford Racing springs on and haven't had any trouble.