When the '68 GTO came along, I think quite a few put those on the track. There have been several in recent years.
If I understand this article correctly, Adam Strang's '68 GTO was the 1st Stock class GTO to set a nat record in the 10's. If not, I stand corrected.
https://www.hemmings.com/blog/articl...8-pontiac-gto/