I have a 55 second series. When I purchased the truck the prior owner moved the fuel tank to the back of the truck under the bed and changed the tank to a 34 gallon size. The fuel gauge works, however, will only register half full when it is completely full. I guess there is no easy fix for this and most likely will have to remove the bed so that I can change or reconfigure the fuel sensor. Does someone have a better idea or an easier fix? Thanks, Pete