What the story is that my car is running cs4 with 285bhp & 340 lb/ft. After having this done the clutch started to slip in 4th & 5th in overboost after a month or so. The clutch that is in at the moment is the Courtenay up-rated 1 with there flywheel. But when they were fitted the cutting fluid on the flywheel was not washed off so has contaminated the clutch disc which is making it slip on overboost. So i need a new clutch but don't know what 1 to go for so it will be 1 of these. Another Courtenay 1, Sachs up-rated item or a helix.I will be getting a lsd fitted when the box is out. Please help me make up my mind to which 1 will be the best for every day driving around but won't give up easly. Also keep in mind that i am thinking of getting more power out of it as well.