Looking for info an links for motor kits , Would like to try the 840 kit but the down time I really aint got the 1st XC race up in Ia. is in 4 weeks , Maybe high compression piston kits an cams ? An 2nd Wheres the best place to pick up a Muzzy system at lowest price , From what I`ve read they seam to be the best out rigth now or untill I buy one anyway lol . I`ve read thru the site sponsors an aint really seen any kits except for the 840 kit . What other kits are available ?