There should be 2 classes, Vintage and Late model. As Tim mentioned, 1992 and back are basically aero bricks compared to 1996-2015 cars.
Aero drag and downforce starts to play a big part of handling at 100 mph and up.
To put in perspective, back in 1969-1970, it took 620HP in a Dodge Daytona (which was very aerodynamic for 1970) to go 200mph and now it only takes ~450hp to go 200mph in a latest NASCAR speedway cup car.
__________________
Jay
|