What's This Radiator Fit?

The radiator in my 67 Barracuda when it still had a slant six was like that - with the filler panel on the passenger side to fill in the radiator opening that was the same size as used in V8s. I saved the radiator when I swapped in a 360, so when I later got a slant six 63 Valiant with some kind of aftermarket radiator, I just trimmed the 67's filler panel with a cutoff wheel, drilled a couple of new holes on that side, and slapped the 67 radiator in the 63. Fit perfectly.