Gas Tank Leak repair what are my options??

IF you decide to go with an epoxy, JB Weld is not impervious to gasoline. You need something that is specifically formulated to withstand gasoline. There are epoxies specifically made to use repairing gas tanks. One of those would be your best bet if you decide to go that route.

That said, a new tank is probably the best idea. They are not that expensive.