Great topic here. I've got a '86 coupe with a forged 383ci mini-rammed motor, manual valve body th400 with a Gear Vendors overdrive, tons of suspension and brake mods, roll bar, harnesses, etc.... I do NCCC low and high speed events, hpde track events, and SCCA autocrosses.
My now 22 year old son bought his first Vette fall of his senior year of high school. A '87 coupe. Turned it into a track car, completely gutted, no glass, lexan hatch, aluminum race seats, cage, stock motor, ZF6 man. trans, big brakes, lots of suspension mods, 2700lbs, huge Hoosiers all the way around, does very well at high speed and NASA events:
Then a couple years ago he bought a '99 Fixed Roof Coupe. Turning that into a "One Lap of America" and NASA ST2 car. He had a 442ci motor built for it. Dyno got 600 wheel h/p. Tons of brake and suspension on that one too. Front brakes are Stop Tech with 15" rotors, 6 pistons. He's a nut, I don't know where he gets it from but he's worked very hard and doesn't have any loans on either Vette or his '06 Trailblazer SS (LS2 Vette powered of coarse):
Here's our enclosed trailer at the track: