I thought i would give everyone my feedback on my crower cams. better power above 3k rpm. a good buy for the regrind price of $200. but..... they cut the base circle too small so if you use crower be prepared for new shims. they are good cams, no problems after 2,000 miles of hard break in. if you are going to buy crower go with the 272's instead of the 264's, i was playing it on the safe side but more duration probably would gotten me a little more power.