Those hinges aren’t available
My son has a 1979 Pontiac LeMans Safari station wagon that he loves. I need to replace the two hinges that hold the back glass in place. One has already bro- ken and I have looked everywhere I can think of for new ones but with no luck.
As you have already discovered, new back glass hinges for your son’s Pontiac wagon are no longer available. One option is to make new, stronger hinges. A good machinist can do this without too much difficulty.