FORD: VEHICLES WITH 6.5 BED THREADED ATTACHMENT HOLES LOCATED ON THE BOX INNER SHEET METAL PANELS. ALL VEHICLES EQUIPPED WITH 6.5 CARGO BOX ARE EQUIPPED WITH THREADED ATTACHMENT HOLES LOCATED ON THE BOX INNER SHEET METAL PANELS. THESE HOLES ARE DESIGNED TO ACCEPT FASTENERS THAT SECURE AN OPTIONAL CARGO MANAGEMENT SYSTEM SIDE RAILS TO THE BED. *PE