I'd suggest you go to "Toilet Review" at the top of this page. Then "Shopping" and finally "Toto Toilets". Toto has several toilets that use their Unifit Adapter that will fit these select toilets to 10", 12" and 14" rough-in just by changing the adapter. These adapters are exclusive to Toto and only the select models. No other manufacture has anything like these. Just scroll through the numerous models listed and find the ones that use the Unifit adapter.