FWIW, I went 13.2-13.3@106-107 7-8 times in a row when I was 16 in my brothers 99 z28 that had only an air lid/k&. Few years later took his 2000 z28 to 8.5@88 with only a ls6 intake and a lid. I also built/drove Thacker's cammed/header/gear'd camaro to 11.60's with ease. launching on some worn out 16" et streets. I know these are other peoples cars. but I built em and drove em so I can throw them in the mix .. lol plus I am currently shopping for a 01-02 SS or Z28.