Hello,factory gas caps are still stocked at your local GM dealership or they can be ordered by them. Part number for 67 and 68 is 3931449 part number for 69 vented cap is also 3931449 part number for 69 non vented is 405373 but that one is discontinued. List price for the cap is 17.89/Wholesale is 13.42. If you ask nice most dealers will sell for wholesale.I know I do. Good Luck
