I have a 05 Electra Glide that I have a 1 1/2" Solo lowering kit in the rear, everything is great except when traveling 2 up & loaded, the rear tire rubs on the fender going over large bumps, I am looking at the 12" factory HD lowering shocks which I believe is the same as the Street Glide air stockers & the Ultima chrome 12" air shocks that Eastern Performance sells, any reason to choose one over the other from your experience? I am assuming that both have internal stops to prevent the rear tire from rubbing.Thanks