I saw Grady Bryant posted on FB that he had a new 1969 ZL1.
Was curious so did some research on it.
It shows up on the CRG ZL1 list as Hugger Orange #29 selling dealer Bill McKay Chevrolet Fort Worth, TX.
It went through Fred Gibb Chevrolet then sent to the Dick Harrell shop.
Grady Bryant and Dick Harrell were friends from early 60's drag racing
From what I can tell, Grady raced it in Pro Stock with McKay Chevrolet sponsorship for one year then returned it to the dealer. The car was then sold and may have been stolen or may have been buried in the ground on some sort of insurance fraud?
BTW Grady is an interesting guy ! FC drag racer, actor, book author , producer, etc , here is his web site
https://www.gradybryant.com/
here is some other stuff from my search