Well, there is about 8 gallons of gasoline on my driveway this morning (66 Valiant)

It's rather unnerving so walk out and see your car surrounded by a pool of gasoline. Happened to me too, in a parking garage. Tamraz on ebay sells new tanks, just over $200 delivered, well worth it for peace of mind...if you patch the old one it's only a matter of time before it leaks again, also, it probably has a lot of crud in it. Other vendors sell tanks too but beware of the ones made in Taiwan or Mexico, you want the one made in Canada.