With the alterations that I have proposed, placing the fuel tank in the cab is one option that I'm thinking of doing simply because removing it from under the rear of the vehicle offers so much better hill/rock climbing clearance. I would simply place the tank where the back seat is but I want that space to become my mini-truck bed. Of course, I would convert the tank to accept a filler tube, cut the filler tube mount with lid from a salvaged Sidekick, relocate it about elbow high on the Tracker behind the passenger's seat, and vent it to the outside. There should be no law against this due to the fact the tank is vented to the outside. Thank you for you concern.