Just an FYI, the ProSteers have since been modified to offer a lot more clearance and late 2012-up JK 44 shafts will not have any issue with them.
http://wayalife.com/showthread.php?11925-New-Dynatrac-Lower-Ball-Joints-2012-JK
http://wayalife.com/showthread.php?11925-New-Dynatrac-Lower-Ball-Joints-2012-JK