Radiator Support for '71 Valiant

The guys at the frame shop gave me some additional info today that may be of assistance to my search. They tell me that the radiator measures 24" from mount to mount, and if my research is accurate, that means it's a 22" radiator (if anyone could confirm/deny that, it'd be greatly appreciated!). Based on that, I believe I'm in need of a core support for a 22 inch-er.