i’ve seen this discussion before, but my aux tank is not like the rest of what’s been previously discussed. I have a 60 gallon tank with a 2 inch pipe sticking down straight beneath the corner of it, and a vent hose on the side that connects to the top of the aux tank. in theory I should be able to connect the factory inch and 7/8 filler neck hose along with the Vent hose and be sufficient. Has anyone had any issues with running such a large inlet against the factory in tank lift pump? I can add pictures for more clarity. Sidenote I had this tank on my 2008 Cummins and never had an issue.