On my 94 Vmax 600 I swapped out the secondary to a 96 Vmax XT one. It gave me alot more helix options. I also installed a primary clutch from a Polaris XCR 600. The primary made a big difference in performance. I am probably parting this sled out. I also have a 2 inch riser for the handlebars. Still going back and forth about parting it out.