The RMP Street Force suspension kit calls for an old Shelby hot-rodding trick: lowering the upper control arms 1 inch to improve negative camber. This prevents control-arm binding and provides more room for negative camber. A template is provided for drilling. Begin with a 11/44-inch pilot hole, then a 11/42-inch bit. Be prepared to drill these holes out a pinch more than 11/42-inch in order to get the upper control-arm bolts through the holes.