These covers attach to the front of the cowl, each using two of the "factory" plastic clips that fasten the cowl to the firewall. A concealed interlocking tab on the underside secures the front of the cover to the inner fender flange to provide a securely fastened (yet easily removeable) cover in just minutes. The covers have been trimmed specificly for the GT500 to provide clearance around the throttle body, otherwise it fits perfectly.Made of the same injection molded textured plastic as the factory underhood components for a perfect match. Proudly manufactured in the U.S.A. made by CP