I have been thinking about using that fuel cell on my '57, but I wondering if the mounting straps will miss my shock mounts. Can you tell me the width between the metal straps like outside to ouside and inside to inside? I'm also concenred that the fill neck would be right under a bed crossmember and I'll have to do something with that. Is the filler neck in the center of the tank or offset? How much offset from center? Thanks