I had ordered the SR springs previously (also have a 2011 V6). Went to get them installed and realized I needed new strut mounts as well. Apparently the SR springs won't fit in 2011 and newer mustangs without the mounts. Ended up returning them and getting Eibach Pro springs, which fit perfectly (with camber bolts). Hope you don't find yourself in the same dilemma (or maybe you ordered the mounts as well).