[RGordon]

I went with the 60 gallon fuel/toolbox combination solely for the reason I wanted it below the bedrail. I added a fold-a-cover topper for a clean look. Mine is the RDS model from Northern Tool and used their gravity feed kit. I have never had any fuel leaking out the regular tank and only leave my manual valve open just long enough to fill the main tank. My F350 will throw a code and check engine light will come on if you leave the manual valve open all the time. It senses a fuel level sensor issue. The 98 gallons surely eliminated numerous fuel stops and finding fuel stations that I can fit into are far and in between. This setup has been one of the better modifications that I have tried.