I have a 2003 Cooper S and I run in GS but my codriver would like to run with my car in STS. The car is Stock, noting done to it. He normaly runs with his car in STS but for the next weekend he can't take his car. Can he runs in STS or have to go in STX or stay in GS.

 

The MC is in HS and STS
The MCS is in GS and STX

 

thank you, I will tell him that