Check the aftermarket places for a price on a new behind the seat tank,or perhaps the local wrecking yard for a used one.An in cab tank hooked up properly with no leaks is AOK.I hear more people saying the can smell gas inside the cab,with the original tank. If that is the case there is something not right. probably a leak somewhere in the filler neck or perhaps the tank.I have a 55 and a 65 with stock tanks,behind the seat,with no problems whatsoever.I see no reason at all to change them out for an under the bed unit.
