Mighty Mike, I thought about this too. If you know how to rig things up you can make a flow transfer tank. Just cut a hole in tank towards bottom. Then put a hose from there to the inlet tube of your truck fuel tank. You can then put a pump in place or soleiod in place. Both being 12V. This would be a manual way of filling up tank while driving up surely 10 times cheaper then a transfer flow tank. Just a idea.
2009 Dodge Ram Mega Cab 2500 6.7 cummins
2011 Forest River Cherokee 28BHKS