One has to remember what they have. There were two sizes of cars converted in those years if your glass is only cracked. Pull the lens off and use the rear view mirror glue to put it back.togather. Do it by after a good glean up (dishwaser) prime both sides glue just one lay them down on a flat surface and push them togather for 60 seconds. That glue is designed for smooth close fitting parts it will glue a handle back on a mug.