I’ve never posted here before but have been reading the new Mach Z threads with interest. I decided to post because I haven’t heard anybody mention this. I’ve been looking at getting a clutch kit as mine comes out of the hole pretty lazy. Opinions seem to vary about the effectiveness of some of the ones out there so I decided to go a different direction and called the Crank Shop. Their web site said they had a clutch kit for the stock sled for $125 and 8-9 hp gain with trail porting (just cyl block no head). When I called today the guy there said their clutch kit pulls out on the best stock setup they could find by about 6-8 sled lengths and stays there. He said the trail port was 10 hp on the dyno and the porting and twin pipes were about 25. Anybody out there tried their stuff on this motor? How is the clutch kit price as I haven’t checked anywhere else yet?