My bathroom is undergoing a remodel and I'm hoping to replace my current Toto Drake toilet with an identical one in a different color (we have bone and the new one needs to be white). I know that it is a two-piece Toto toilet with a Tank Model Number of ST743S #03. I can't seem to figure out which bowl I have since there is no model number on it. I've tried contacting Toto and they haven't been helpful. I thought the shape was elongated, but now I'm second-guessing myself. I have a serial number from the bowl, but that's also gotten me nowhere. I've spent days on trying to understand the options and I'm just getting more and more lost and overwhelmed. Any help would very greatly appreciated.