Heres the filler neck that my bro and I made so I could put the filler through the bed floor, using a marine style filler.
The filler is actually two pieces, there is a ring below the filler that is tapped to accept the bolts you see sticking up in the pic. We had to thread the bolts in from inside the cell and then the filler neck just slips over the bolts, now acting like studs. There are two gaskets as well of course.
Here's a pic of the marine filler I ordered, plan is to flush it into the bed floor and connect it to the filler we made with a short section of filler hose.
Some pics of the fuel cell and compressors with the bed back on.
