Could go either V6 TT or V8 (to follow trends, if GM sees that imports are still huge in a few years, V6 TT might be the way to go)/QUOTE]
What makes you think that? Why would GM opt for what would most likely be a more expensive setup using a twin turbo V6 verse using a a N/A V8 setup, and wouldnt a TTV6 of say 3.5-4.0 liters use about the same amount of gas because of the extra fuel needed as a 6.0-5.7L V8 which already get pretty good mileage for being such large displacement V8's?
What import besides the Audi's TT even has a Twin Turbo setup, except for the now extinct 300zx and Supra which neither will be comming back. Well I know toyota for sure wont be bringing any Supra in the near future and I haven't heard that the new Z will be recieving a TT addition. Why would you exclude a V8 from any new Camaro/Chevelle, dont see much point in bringing any car using either of those names back without a V8 option. I highly doubt a better profit, sales, or marketing case could be made in favor of a TT V6 verse a V8 setup! I understand that imports are popular but I would expect a TT setup on somethin like Chevy's new derivative of the Kappa as a top very low volume niche model, but I doubt we will even see that, maybe a positive displacement supercharger or single Turbo I4 is more likely if any. I would bet that anything carrying the Camaro or Chevelle nameplate in the future would definatly have a V8 at least as an option. I could see AWD as a possible option but I'm sure with the new Zeta platform RWD would be the standard.