Depending on your needs you might want to check with Jason @ Alfissimo. He has OEM stock radiators listed, but he also works with a 3rd party to offer HP Aluminum radiators for GTV6,Milano & 164.
67 Duetto - Angelina
73 GTV - race car restoration
84 GTV6 - Signore Busso
95 164LS - Black Bomber
"Pay attention son!" - Foghorn Leghorn