Need help to identify years

Lots of guesses in this thread! This is not a slant-6 radiator (bottom hose fitting in wrong place). It's for a '64 Dart, Valiant, and Barracuda with a 273 V8, automatic or manual transmission. Does not fit '63 or earlier cars (no V8 available), does not fit '65+ (wider radiator mounting pattern).

If the upper hose fitting were moved either several inches to the right or slightly to the left and the lower hose fitting and the drain **** were swapped, the result would be a radiator suitable for '63-'64 Dart, Valiant, Barracuda with slant-6 engine.