: I measured from my wall to center of hold-down bolt and it is more like 11 1/2" rather than 12". Will the Ultramax still fit? (The previous Briggs two-piece fit right up against the wall.) What about Toto Drake? Also, if I bought an American Standard Infinity instead of one of the Toto models, would I be sorry and would I have trouble with the 11 1/2" rough with the Infinity?

Both the Toto Ultramax and the Drake get by with 11-1/4" rough.