Factory body (ie Nascar legends, or earlier) based on the N 2003 physics
model.
Grand Prix Racing circa 1930's -1950's ( ie Silver Arrows, Alfa
Romeo's...etc) based on the F1C physics (or whichever makes it feel
correctly)
Just throwing things out there...
I would love to go wheel to wheel with Fangio at the Tagra Florio, or with
Pearson at Bristol in a Mercury
Timmy