[blykins]

I'll start with this...

Before you get concerned about replacing the clutch, have someone check to make sure it's adjusted correctly.

Once that's verified (along with checking to make sure nothing is leaking to get the clutch disc wet), then I can make this recommendation:

If you have over 600hp, then a twin disc would be a good move. Otherwise, the street manners of a clutch meant to hold 600hp on the street are not all that good.

If you're around 500-550hp, then I have several combinations that will work just fine and will be perfectly streetable.

When dealing with clutches, you have two variables: pressure plate clamping force and clutch friction material. When you have less of one, you need to make it up with more of the other. A low clamping force pressure plate will have a very easy clutch pedal, but you would need a sticky disc to help take up the lack of plate pressure. Conversely, a high clamping force pressure plate will be hard on your leg, but you don't need a sticky disc.

Clutch discs can be made of different materials. The most simplest material is just an organic material. From there it goes to different combinations of organic material, bronze/aluminum, Kevlar, sintered iron, etc., etc. Organic discs give the best street manners; no chatter, etc. As you progress in friction material, the more risk there is for chatter, instant engagement, etc.

What a twin disc does is multiplies the friction coefficient by adding another clutch disc. The McLeod RST kits are rated for 800hp, but they have a relatively easy clutch pedal and organic discs. It's the best scenario for a high horsepower car. No hard pedal to push, no chatter.