mr obvious here first time listner first time caller
sorry dont have that dyno in my back pocket, ,
just have a 1320 errrrrr

This is the kind of crap that really gets on my nerves on here. When well known and respective people with real world experience give their input on a subject and somebody disagree's because he's changed 100's of plugs at the track and seen no difference. I'm sure Jeff and Brian don't have stock in autolite plugs so why would they lie and if you have changed 100's of plugs at the track and not seen any difference going from one style to the next or one heat rang to another maybe you should start your own post on how to read plugs.