Ok I just swapped to an 8 rib setup on my Kenne Bell supercharger and I have a few Kenne Bell blower pullies I don't need anymore. All in 6 rib, I have a 2.75", a 3.5", and a 3.75" pulley. The 3.75" pulley only has about 500 miles on it and the others are still brand new never used. New they go for $65 a pop so I will let them go for $50 + shipping OBO. Since a lot of us are in the Chicago area, if you would prefer to meet up to take a look at them and do the deal then that is cool too. Just reply in here or send me a PM to let me know if your interested.