These are good points. I realize there are classes to "drive" these cars, but some could argue that not much "racing" goes on in those classes because of the mis-matches between cars. A 2.5 liter turbo car pushing 300HP competing against a 600HP Viper or a Porsche 935 isn't going to do very well (usually).

If turbo classes existed that took engine size and HP into account I would think it would be very popular.

Just a thought.