I have a couple American Standard Champion 1.6 gpf toilets. They are about 20 years old and still work great put need a few replacement parts. The parts have been discontinued by American Standard. I got Chicago Faucet Shoppe's name from American Standard. I called Chicago Faucet Shoppe and was able to speak with a REAL person. They went to a great deal of effort to make sure I got the correct parts. I need parts for my exact model and that model is also discontinued by American Standard. I am keeping their phone number handy if I need anything else. They were EXTREMELY HELPFUL.