If that's rust, don't even try to use that tank. You'll spend more fixing it and sealing it on the inside than buying a new one.
New tanks, made in Canada by Spectra, are available for about $200. (Rock Auto)
Interestingly they are better quality than the originals.
PM me about an extra one I have.
New screws usually come with a new sending unit.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
