You want a Caddy that gets 50 mpg, goes from 0 to 60 in 1.5 seconds, and is priced like a Yugo? OK, I'm just kidding...sort of. You need to be aware that not all low flow toilets are equal. There are some good ones that are not too expensive, but most of the quality toilets are not really cheap. I'd suggest you go to Terry's home page, click on the Report on Low Flow Toilets, and scroll down to "Terry's Shopping Cart for Toto. You will find all of the Toto products listed there and the specifications for them, including height.