just picked up an 03 550 mule today and im in love with it already but my search has turned up empty on a couple things. 1 it is in need of tires and i would like to know what size i can go up to without any clearance issues. 2 i need a top for it and all the ones i have found do not list it fitting the 550 model. Is there one for a more popular model that i can use and where is the best place to find one? Thanks in advance