The Crane is out, as I finally got the specs from them. Turns out it's the same distance from the finished wall as the Rialto. No point in opening a wall if I'm not going to gain space. So now I'm looking at either the corner option or the Rialto. One thought I had was to use a 1" offset collar and push it back towards the finished wall. That would give me just about 6" between the front of the bowl and the tub. Trouble is, I'm not sure such a collar is made. The only place I've seen it referenced was on Caroma's site. I've seen "torque-fit" 1" offset flanges, but I'm pretty sure I'd have to try and remove the 70 year old flange thet's on it now in order to use one of those.
1.) Is there such a thing as a 1" offset collar, or flange adapter, that would just bolt/screw into the existing flange, or floor. The current flange already sits about 1/2" below the finished floor so I have a bit of vertical room.
2) Is 6" enough space between the tub and front of the bowl?