I drive BELOW the posted speeds about 98% of the time,and usually drive the wifes mercury or my 1996 corvette thats not all that modified, frankly I don,t need any tickets and being retired Im rarely in a huge hurry and old enough and experienced enough to know that even when I,m driving my 1985 corvette that can easily beat 90% of the street cars performance almost effortlessly, that theres no potential gains to be made, and a huge risk, if you engage in street racing.
my 1985 corvette is not that fast, it runs low 12s unless I turn on the nitrous and low mid 11s on giggle gas and its only a well built 383.
my older 1968 corvette (since sold) had a killer 496 big block and a full roll cage and easily went 10.26/137mph , but tended to attract a police escort almost every trip so it was hardly fun to drive, and it only got about 7 mpg.
yes you can build a really fast car, but once you get a car that will consistently run at least mid 12 second 1/4 mile times there little competition on the street, and going faster starts costing a great deal more money and takes far more maintenance time.
In my opinion, theres little sense in owning a car you can rarely drive, thats costs you a great deal of time and money
please don,t miss understand me here, its a hoot to have a car that can smoke the tires at the blip of the throttle or start the tires smoking from a 60 mph rolling start, but its not very practical, and gearing a car so it can run at 140 mph or more in most cases just means its lost a great deal of low speed acceleration potential that the correct gearing could get you back!
Im currently building up the list of components to do my own big block swap as Ive helped at least 6-7 other guys do now, the cars that result are a great deal of fun, but must be used on the track ,not the street to see the full potential.