It will fit. The shape of the new style tank is different from the old. I had to make a large patch where the floor of the trunk rusted out but opted to use the new style on my 59. As you can see in the attached picture, I added 3 little risers to support the bottom of the tank -part of the tank sits upon the shelf in front of it. That's the difference between the height of the old trunk bottom and the new, after they 'opened up' the spare tire compartment. The location of the fuel line hole is different, but I think the drain hole is the same. Also it's a bit of a strain to get to that fuel line fitting, but it's possible. I don't regret doing it. I had to make sure the straps still held the tank tightly and the filler neck was positioned properly.