From what I can work out, the cars you're actually talking about here are prototypes of the Plymouth Superbird and Dodge Daytona for the 1971 season - and I can't work out why it's so hard to say that instead of just repeatedly saying "1971 winged warriors" and demanding other people find out what it is you're suggesting.
In checking, it appears neither car was ever real and Chrysler only built 3/8th scale models for wind tunnel testing. That weird, AI-ass-looking car from your original post looks to be one of two cars - a Superbird and a Daytona - made by a pair of enthusiasts based on photos and drawings of those scale models... in 2002, and never driven by Petty (as he'd not have fitted in the original).