You may or may not have a return line to the gas tank, depends on what emissions crap is on your vehicle. It's just one or two more lines that you will have to disconnect in order to drop the tank.
3G Alt. Upgrade, Duel Batteries, 351M bored .030 over with Edlebrock cam and intake, C-6 w/AO4D internals, 3" lift w/RS 9000, 33x12.50 MTR's, Saginaw PS Pump Conversion, On Board Air, Detroit Locker, Hydro Boost Brake System, Altimeter from a CH-46D, Map Light from a MH-53E.
U. S. Government - Wasting paper and keeping Lumber Jacks gainfully employed since 1776.