Buy a radiator for a 70 Duster 340. An aluminum radiator like in the link below, with 2 rows of big tubes will cool better than 3 rows of smaller rows. The radiator in the link is the one I plan to use in my 65 Barracuda.
[URL]https://www.coldcaseradiators....body-17x22-auto-aluminum-performance-radiator[/URL]
