Would like to see a RS2k whoop a RST.

Lets say that your RS2k is making 175bhp (TBH i would be supprised unless its had major engine work done, but we will say it is) then its about the same as my Focus ST170 now i know that my ST170 will just about keep up with a RST running 10psi.

The focus has the advantage of a 7200rpm rev limit, close ratio 6 speed box and variable valve timing and duel stage inlet all of which im guessing you dont have in your RS2k and the RST defo dont have, so your behind before you even start.

Also the ST170 also gives away about a good 30lbft ( so your RS2k will also be giving away min of 30lbft to the RS Turbo so if your mates RST is running a solid 9+psi on std engine then i think your going to struggle