I am replacing an existing toilet with a new dual-flush toilet. The rough-in is 14". the toilet I want to install is a 12" rough-in (I'm certain I can't get it in a 14" rough-in). Is the only problem I'll run into cosmetic, in that the tank will sit an add'l 2" from the wall from the existing toilet? it's hard for me to picture what that might look like, but it doesn't seem that big of a deal.

I have no plans to do any other remodeling, i.e. break the concrete floor, etc. I simply intend on replacing the toilet...I want this to be an easy job. Worst case I'll go shopping for a 14" rough-in toilet, but I'd rather not.

Any info would be appreciated.