Do you have the build date on your 76 Vega? Check the trim tag under the hood.
Mine is one of the last 76 Vega's built - 2nd week in August, 1976. So, maybe this was a mid-year change.
Or maybe I have the only 1976 Vega with bolt-on hood hinges - a super rare, 1 of 1 car. I'll bet I can get some big buck for it then.