actually fits. I had to build up the inside of the hull and the base and am less than impressed with my fiberglassing ability. Fortunately its hidden from view.
The new tank holds approx 70gals.
The old tank was not in bad condition. It was foamed in place and the lid bulged a bit but there was no major corrosion. However, if I had to remove it at a later date it would require the removal of the engine first.