OK, so it's not a 455, but it's a Buick! From HorsePower Heaven http://www.horsepowerheaven.com/navigation_all/hhnavigation.html Saturday May 2, 2003 "A spectacular day at Mission includes the first seven second Super Stocker run by John Gallina,..."
Thanks for the link! My favorite pic of the bunch is this one: with the caption: "How many horsepower per cubic inch?!!!" There's also a good pic of the motor: I got to see this motor going into the car when I was out in California late last year. It's a destroked stage II with Indy heads, built by Duttweiler.
Horsepower Heaven has a new Stock / SuperStock video coming out at the end of this month. I'd be highly disappointed if it doesn't show that run. I ordered Horsepower Heaven's "Four Days in May" video which has the first nine second run by an NHRA Stocker. Nice video.