This is the correct dealer option GM visor. I'm not sure who made them for GM. It's the 54/55 1st series specific visor. It has a cast chromed center mount that is bolted to the center of the cab above the windshield, and then the sides are mounted to the drip rails at the front of the doors.


1956 GMC 100 NAPCO Deluxe
1955.1 Chevy 3600 NAPCO
1954 Chevy 3600 NAPCO