Looking for a replacemennt tank lid for American Standard toilet. Date imprint on tank is 18 Jun 1997 no other numbers appear on the tank. Home Depot says they need a model# in order to find the replacement. We checked three models they had and none matched the one I needed. I know the lid only is not available, per home Depot, but I’m checking with you to see if I could special order the lid only or find out which tank only I need to order or purchase from one of your distributors. There was a number on the bowl L6.0 and 1.6, if that helps. Please respond. Thank you.