What radiator for 64 360 barracuda?

You know , the 64 1/2 Barracuda was just a quick response to the Mustang.It was just a Valiant that they did some fast design changes on.They quickly popped out a small block for it and I don't think the 64 1/2 Barracuda production numbers were all that large and would guess that there were more 6 cylinder ones than V8's There weren't any high performance packages offered in 64,they just wanted to get it out .The Barracuda really came into it's own in 65 when they started offering HP packages with the Commando 273 ,anti sway bar,larger brakes and a bigger radiator hence the larger front hole. In 66 they started moving away from the Valiant image for the Barracuda's and by 67 it was it's own image not that of an upgraded Valiant.I remember when it was 1st introduced as the first "pony" car and it did beat the Mustang to the market by a week or two but the Mustang was much more developed as a platform than the Barracuda with HP packages and different body styles.