? about Day 2 mods...

[whitetop]

You bet.
NE and midwest was more drag/straight line orientated. West coast was more trans am, imsa look. What you used for speed parts was also based upon were you resided. Not all cases of course but good indicator. For instance Sun gauges were very popular in the NE and midwest but SW was used more out west.
Guys in the NE were jacking up their cars all around and running huge rear tires while guys out west even back in the early '70's were running fender flares etc.
Check out the New York mags from the era( Hot Cars, Chevy Action etc) vs the West coast mags, Hot Rod etc and you will definetly see a big difference.
Dave