I was given a 1977 550 Four that was stored for about 15 years with gas left in the tank. Needless to say, the tank rusted badly and sprung a number of leaks. I tried relining the tank, but I've come to the realization that it is beyond capable maintenance. Anyone know where I can get an aftermarket tank? A new one that would need painting but that would fit would be outstanding. Especially if it held more fuel than the OEM. Any help would be greatly appreciated!