Being a prior C5 race and C6 highly modified street Vette owner, as well as many fast, mid and modestly powered cars a stock FiSt is a superb little street car and more than fast enough for a lot of great street fun(street to me means more like back roads, no traffic or little, nobody to hurt but myself....) I suppose if I lived in flatlands with nothing more to do but go straight.....then more power would help break the monotony. BUT, i would autocross, track day, drag race but if into that I would have a dragster or some sort, not a Vette, or for me even the FiST as there are better drag platforms to work from though it is a quick little bugger with a few mods.
My race Vette was a monster and very costly, my street Vette did not have massive power, it had a fully developed suspension and drivetrain package, gearing, etc, it was faster than a Z06 but with less power because it used it better. I ended up driving the Vette very rarely and like a grandpa most of the time simply because it was to fast to responsibly use on the "street" and it was a convertible so not safe on track as it was dang fast there as I did a couple of laps in it, once.
I could of finished the roll bar design, it is a hard car to do it right in, none are sold yet that are track worthy, all require significant cutting into expensive parts, taking many things off the car to get to areas needed....50 hours of development time and I realized hardly anybody would buy one and I knew I was going to end up selling the car because it had no real use to me.......just to fast for the street and I had a dedicated track car that was faster with half the power, slicks, aero, weight, etc......all add up.
All that said, I have driven hundreds of thousands of miles at speed on public roads but out in the boonies, up in the mountains, sometimes on fire roads(super fun) in modestly or mid powered cars and had a great time but the times have changed, ticket and insurance costs have gone nuts if you get caught, more cars on the road, worse roads in many places, at 62 I realize I am not going to live forever so not as fearless as I once was but mainly I grew up and realized it is just not the right thing to do.
A bit of cat and mouse, a little impromptu sprint against another car but nothing to serious, I am OK with that, more that that is is simply irresponsible and selfish on public roads.
The old adage, driving a slow car fast is far more fun than driving a fast car slow, is incredibly true.
Off the soap box now, have a great holiday
Rick