Two options for the clamshell spring opener assembly from Ford. Replaces the solid clamshell stop on the 2005 GT.
6G7Z-6343128-A - Shown for the 2006 GT, about $16. XR3Z-6343128-AA - Shown for 1999-2004 Mustang, about $12. This looks similar to the GT spring, but it also includes a bottom clip not needed on the GT. Maybe has one more spring turn.
I have a 2005 GT and would like to install the late 2006 spring clamshell stops. Anybody know the part number? I understand these were used on the 2000's Thunderbirds for something. I borrowed this picture of the stop from another post. Thanks