[pjmoreland]

The next step was to cut the hole in the bed floor for the filler. I installed the filler hose on the tank and taped over the opening to keep junk out. Raised the tank into position until the hose touched the bottom of the bed floor. Used a silver Sharpie to mark the hose location. Dropped the tank back down. Drilled a 1/4" hole in the center of the marked spot. Used a 4" hole saw from above to cut a hole. I should have used a 3-3/4" hole saw, as the mounting screws ended up precariously close to the edge of the hole. I used a floor jack to hold a board against the underside of the bed floor while cutting the hole to minimize splintering.