I cut out brake lines (old original one and 'newer' but rusty) and pulled EVAP pipes and fuel line to work on driver side frame. I also drained and pulled the fuel tank, mostly because it's straps are bad anyway and to not start a fire from working on the jeep.
I was blown away on how the jeep still ran! The harness at the fuel pump was chewed through by mice and they're full of green corrosions! I'm glad that may be why my fuel gauge don't work. I will cut and splice together and rock out.
I am heavily considering to do the gas tank tuck while I am at it. Make the bottom of the tank flat to bottom of frames, to make it easy to make and install skid plate there. Move EVAP box up and next to the tank, then build frame and close up the tank and EVAP. I am not sure yet on where to move the gas filler to. Move up on the body? I think I prefer to keep it simple and just open the hatch to fill in the tank directly.