Just trying to save someone the headache of spending hard earned money on parts that won't do anything to their car, other than lighten their wallet....racing or not. My example is from back when my Barracuda was my daily driver in college (in Colorado). The car ran 14.5 with the 302's and 13.9 with the J heads at Bandimere speedway (5800' altitude)....for those that don't race, that is a pretty large difference in the "seat of the pants" feel of the car....which is why I said, I wouldn't bother; otherwise, your ice-cream cone will melt before you get home :D.