Never mind. Patience is a good thing. The filler tube pulls out of the right side of the tank with a little effort. A little more than I thought. The filler tubes mounting brace will not fit through the hole in the trunk floor (diameter too large). With a bit of side-to-side moving, the filler tube came out. It's recessed about 5-6 inches inside of the tank.
All in all, I'm glad I'm doing the tank swap myself. If you have any skills with general hand tools, don't be afriad of this one.