I have a 4 mill with stock cylinders on it right now, it was built by Jeff at F.A.S.T. 18cc domes, agressive dune port, ported cases, +4 timing, 35pwk's, v-force 3's, CPI inframe drag pipes. I have a cub setup and a lock up to go on. I ride really wide open trails and fire roads so I'm gonna make the cubs trail friendly :biggrin: . It's really fun in the trails but you have to ride with faster pace riders. I am looking for a 450 for when I go riding with other 4 pokes. It's a little high strung but thats why I love my banshee.