By my estimation, at Road America, the Challenger ACR would be within 1 second, and 1.5 seconds of the Viper ACR-E. Does that answer your questions? Oh, and it can do it, for multiple successive laps, without overheating anything. There are still a lot of unknowns, but what is known, is that it will be the best possible car that SRT can make it. Weight: unknown (current best guess is at or below 4000lbs.) Engine: Redeye (at least, so 800hp) Brakes: Viper ACR-E carbon on carbon Brembos Shocks: Viper, but adapted for this application, Bilsteins Diff: hoping for an E-Diff, but a better version of the stock/Demon diff is more likely. Again, this is easily available on the aftermarket. The off-road computer could have provisions to control it. I consider an EDiff unlikely at this point. ARB: thicker, non-adjustable (possible adjustable ones in Mopar kit form, or from a supplier) Carbon everywhere they can get away with. I would suspect they could not get away with an entire body structure of cf. Viper Xwing and splitter. Same exact part numbers. Transmission: Torqueflight 8speed, with flappy paddles, recalibrated somehow for the ACR application Stiffer springs f and r Provisions will be made for making easily adjustable caster/camber/toe/ride height. Tires: 325mm, Kumho Ecstas (currently), could change Computer: an adapted version of the Demon off road (track only) computer is possible. Likely: A book of settings to help you set the car up for various tracks. Could be made as performance pages in the computer, too. Optimize the engine and transmission, then tell you where to set the suspension, wings, tire psi, etc. All this is a mix of my own detective work, and stuff I’ve heard. It is mostly accurate, to the best f my knowledge. no idea on production dates. I don’t ever see stuff like that. Only that it will be THIS generation.