The fact that in the new rules a turbo rotary moves up two classes taking it into class A but does not have to carry the weight penalty. Someone must be planning one or why would the ruling be made. The fact also that if I was to run my car in the pre 93 then I would have to bolt on 150kgs but a lightweight tiny sports coupe would not have to and in all likelyhood would be producing as much if not more power. Also the reference back to the rules at the period, I don;t recollect cars having to be different weights for different cc's and this is the real issue, it is retainingthe weight penaltys from the older championships but updating to allow cars to move up that should not neccessarily be there (IMHO of course).
Anyhow it does not matter because I have decided I will take the car out in CT instead so just as well.