The one worker was wrong, windshield gaskets have been reused in a few of my cars with no problems later. What year Imperial do you have? The reason I ask is that the windshield from a 1968, and I assume a 67, is sort of pinched in at the bottom on both right & left sides. At first you think this is a deform in the glass, but it isn't, they were made that way, but for what reason I do not know.