i currently have a SLP clutch that was in the car when i bought it, it has about 20,000miles on it and is still ok on the street but when i was at the track it launches fine but i had to make sure i was 100% off the gas until the clutch was fully engaged or it it would slip more than i like. I was thinking of the spec stage 4 for my next clutch as i will be upping the power quite a bit this winter, what is the average life people are getting out of these? I know it depends a lot on driving styles and where you drive and the track but i am just looking for an idea.