i have a 2005 foreman 2X4 and i have allready broke the output shaft and universal joint on my bike twice in the past 2 months the first time with the stock tires and now i have 27X12X12 executioners on it i was wondering if any one knew of stronger parts i could install in my bike to keep it from breaking? iv herd that you can put foreman 450 parts in it and they are stronger. is this true? if it is do i have to modify my bike to use them or do they just fit? please help!