Never been installed. Part of my FR500 head swap on my 96 Cobra. These valve covers featured a breather that was supposed to attach to my intake on the pass. side head. Unfortunately the 01 upper intake and throttle body covered the port, and forced me to use Mark VIII valve covers. I had these powdercoated at Allied Powdercoating in Houston. The job cost me 100.00 alone. They were my old valve covers, but were cleaned, bead blasted to the bare metal, then cleaned again to create a perfect bonding surface. The finish is gloss black, and like I said, they are in brand new shape with not cosmetic or mechanical damage whatsoever. Just did not work for my head/intake setup. 180.00 takes them . LMK, thanks for looking guys.