How many out there are running 4 speeds in their cars fort roadrace/autoX? what are you using? I tried running my own master/slave setup and I ended up frying my clutch as I couldn't get enough engagement/disengagement with the slave. So I'm upgrading to a proper hydraulic throwout bearing setup from performance powertrain, but since I'm in the market for a new one, might as well see what everyone else out there is running - I haven't seen much chatter on the subject in the past - looking at the Centerforce LM070552 LMC Series Clutch Kit but man it's pricy. The clutch I had was a science frition street slayer but can't really comment on it. Anyone running twin disk cluch? how are they?