Don't believe everything you read. He lists many applications for that one cap, and the gas caps changed fairly often. I know that most all 1969 GTO's/LeMans used a round cap with no tabs and a round indention in the middle--not similar to this cap. This cap may just be a later replacement--no telling. The only way to know what a correct cap looks like is to see an original car or have an old parts book and match the part number to an NOS unit in the box. (Or Banshee will help.........lol)

Gas caps were lost thru the years at gas stations and many NOS caps are rare. I have seen only one NOS 1969 GTO cap for sale, and I've had my Judge since 1979.