i cant find and 64 valients, but here is a 64 baracuda with cowl....i think a cowl like this, but 1 inch shorter and perhaps 2x as wide would look really cool. kinda like a low bulge basically the whole middle of the hood.
here is 64 valiant/or dart? with the early style scoop (not sure what its called)
65 baracuda with aar style scoop
1966 Dart GT
...down to only 1 mopar for the first time in 15 years!