a buddy of mine just bought an slp kit. its a head,a pipe,clutch kit. has anyone tried it does it work well and what type of jetting probs should i encounter

I have not tried the SLP kit, but I do know some one who has he had his installed by the dealer. I do know that they had to jet up on the mains for the pipes. He bought the twin pipe package I think he is running 540 mains for 0-30 degrees above zero. I don't think they changed the pilot jet. Hope this helps.