If it is not an AMC tank and avaible I would repair it. Have it cleaned by a radiator shop. They should be able to repair any leaks. Next step would be to coat the inside with a gas tank sealer followed by coating the outside. I am a POR fan for both. I rebuild rustey tanks for Dodge A-100 vans so I know what it is all about when you can't get one. 127GEORGE!!