I want to add an aux. fuel tank on my '76 FJ40. Does anyone have suggestions other than the Man-a-Fre tank? I see Confer discused, but can't find their URL and suspect that they don't make one anymore. Can these tanks be filled through the same filler tube (or same space) as my original, or do I have to install another filler tube? I have the metal overlays on the rear which I think could cause me a problem. Do I need a completely different fuel pump, or modify the original to handle two sources? Or do I pump fuel from the aux. to the main tank? ALso, can I install this myself, or is their welding involved? What about a skid plate? Thanks!