You can pick up a TA for the low 90's to high 80's right now, and a TA will eat a Z alive. The supercharger in the Z's has worse heat soak than the LSA platform in the ZL1's had, and that's saying something. The only difference is that the Z06 pulls timing when it heats up, and can even shut the car down, you can see how that's a HUGE problem on the track especially if someone is right on your ass and your car just shuts down.
Your buddy added the cooling out of necessity lol, I'm saying you shouldn't have to buy a brand new car and immediately put aftermarket stuff on it just so that it performs as advertised. I've done track days against all manners of cars, and it's very very hard to beat the Viper. I put 15k worth of HARD miles on mine and never once had a major issue. I did cook the brakes once, lol, always fun
PM me when you get around to looking at ones. By then maybe GM will have a recall/fix for it. I'm not trying to bash the Vette, I had high hopes for it, especially having run against the ZR1. They just jumped the gun in releasing it, and have some bugs to work out. I still think the Viper is a better track car, but Vette's have always been more street friendly, and to be honest, that's where it will spend most of it's time.
Also Viper's are attention whore's, I've almost been hit 4 times on the highway by drivers trying to take videos, and never was able to fill up at a gas station without a photo shoot and a billion questions. It gets very very old fast, so keep that in mind.