I am biased as I race a 240Z but I agree with Shano, in 1970 in the SCCA C-Production Class the season long battle was between the Alfa 105, BMW 2002 and the Datsun 240z the Datsun won. Now some 40 years on these cars can’t run together at an Historic Festival because one is a sports car. Surely a grid can be made up of cars of a similar age and performance.