Just done some testing on silverstone national which is a very short track so on gp sized tracks there could easily be 4-6 seconds difference between stock and race

f430 on slicks
Stock A596 - 58.186
Street S603 - 57.848
Sport S620 - 57.277
Race S647 - 56.574
I think that could balance it out a bit and get more players at the top.
The balast system can work by where you finish on the previous tt
1st palce has stock, 2nd street, 3rd sport, 4th and below race.
This will make it harder for the faster drivers and easier for the slower.
Whos going to commit.
RacersDuncan
Rob
Micky