So where are these 500, 1966 Barracudas?

This what I want to build out of my '66 cuda. I knew that they werre road raced but I never knew about the GT. Way cool info. We have a local road course nearby and it is open to non members once or twice a year. I am using an aluminum bumper from unknown origin (looks good tho!) and valiant grilles (aluminum). Am looking for beefier T-bars or augment with non mopar sway bar. I am always glad to see road/rally car info! thanks!