newbie question about 11" rough in

Terry,

I'm a big fan of your site and find it to be my go to site for anything plumbing related.

I have just finished contructing a previously roughed in bathroom. I was planning on buying an aquia II toilet 10", but i just went to double check the rough in measurements now that the tile is installed. I have not yet installed a flange but my drain stub is exactly 11" from wall to center of stub.

Because the drain line is installed against a joist, i couldnt have moved it any more and i dont have access for an offset flange (i have to use a drop in flange). Is it possible to use a standard aquia II 12" toilet or do have to use a 10"

Thanks for your advice,

Danglus

another comment to add

i have read on this site that the ultramax has extra space behind it and might fit, is this true for the Aquia also?? looks like i might have to get the ultramax and will probably get the eco sanigloss model.

The Aquia III spec sheet http://admin.totousa.com/Product%20Downloads/SS-00166,%20CST464MF,%20V.05.pdf shows 1/2" behind it on a standard 12" rough-in, so with 11", I don't think it would fit. Toto has spec sheets for all of its toilets (and the rest of the stuff they make) on their website.

After reading all of the reviews and recommendations..i went ahead and ordered an EcoDrake....and will hope for the best during the install!