Another thing about the Caddys is that in a few years GM will finally realize what a waste it was to invest in breaking into the luxury sport market and they will no longer be around whereas the Vettes, Porsches and Vipers will still be racing. I really coudn't care less about seeing that clunky-looking four-door granny car with the most Gawd-awful paint job keeping pace with the sports cars.

And while none of the WC GT cars are as "production" as WC says, (sort of like the way dragracers abuse the word "stock") they are at least production-based with numerous stock parts. You could buy a Vette or Porsche and make it competitive with what you have. To do the same with a stock Caddy would cost you an arm and a leg...like it did for GM.