[Rocky Rotella]

I guess this can be directed towards Dan Jensen, but anyone feel free to answer. I noticed that in the current issue of MCR, John Glasgo has a 71 455HO GTO and he ran a best of 12.987 @106.09. What kind of modifications can be made to these cars yet still be considered "pure stock"? His GTO is a great running car in the 12's where most stock (factory built) HO's are in the high, high 13's and low 14's. Please note I am not disputing anything, I am just curious about what is acceptable, not only with Pontiacs, but in general. Thanks Dan, someday I'll attend. Rocky