This shock fits the front front of quad front shock suspensions at stock height, and includes a replacement lower stud (which I've never needed).
Quad front-front
G63410 (replaces Ford F4TA18045PA)
Standard front
G63414 (replaces Ford F4TA18045VA)
Standard rear
G63409 (replaces Ford F4TA18080VA)
I prefer to replace the supplied rubber bushings with black Energy poly bushings before installation.