These brackets have been designed for dropping in a 03+Crown Vic front suspension into your F100 pickup. They are a set left and right. They are cnc cut out of 3/16" mild steel, and have 1" .120 wall tube for the 4 main mounting bolts to go through as well as the alignment pin hole on the bottom tab. They come bent and tacked and need to be fully welded to your liking. Lower control arm mounts imcluded. It really takes the guess work out of doing this swap. Simply remove the front suspension and crossmembers, measure out and drill your alignment pin holes through the bottom of the frame. After that Jack up the new crown Vic suspension and then make the cuts on the top of the frame and slide these brackets in and bolt it together. After that I then fully weld seams up and weld the bracket to the frame.