Sorry the term 'Cuda from Chrysler first arrived in 70. And only to Vcode 440-6. J code 426 hemi. And AAR 340. That's why the word "Barracuda" is badged on 69s and older. I have a 70 vcode. All badging is 'Cuda. (Although they did make Barracudas as well in 70.) The term got thrown around more 72-74.
I know this is nick picking stuff. But in the Purist sence? 'Cuda started in 70.