Leaking gas tank

The Bugeye now has a leak at the bottom of gas tank. The tank looks good and 
I think this was caused by a stone. I would like to keep this repair wee 
tight. 
How stupid would it be to use self tapping sheet metal screws, gasket 
material and a mending plate?
Anyone have a serviceable used gas tank for sale/trade?
Just as a point of reference, will the tank for any spridget work? This is 
going on a 60 Bugeye.

David Oliner