Yes I do know about the windsheld shortage , some cars the supply runs out and no more , also has a studebaker lark that needed one , (had a few of them ) could get one for the 1960 but not the 63 , that was around 1975 , now it hitting the pintos , the 1979 to 89 the windsheld is larger all around to get away from the rubber gasket and glue it in to make the car more stiff in that area , done my 73 with a 80 windsheld because I could not get a gasket , yes it can be done if you can find a window to put in , only you do not have the brackets and trim for the inside and you have to cut some of the headliner away for the sealent to stick , good part is it does not leak , One of the last great inprovements on the pinto , sad part the car was totaled in the process of moving to anther state but kept it because I had a place to put it because the windsheld was still good and have a 79 cruse wagon , one option that might work is a group buy , if you can find some company (thats still in the US ) to make them , just have to find out how many they would have to make to crank them out , its only going to get worse because they quit making the pinto 40 years ago