Alright so I have an 03' Mountain cat 900 with 144" track. I have been reading that the 03.5 nodel was alittle better ie....drop and roll case, lighter, 2 part tunnel, etc etc. Well it seems my sled has a couple traits of both 03 and the 03.5 model. for instance my tunnel appears to have a definate place where it can be seperated about half way back, also I have the "dimples" on the running boards and not the slits. My Cooler lines underneath the tunnel run down the sides of the tunnel and not down the middle like I understand the 03' "early" modles had. Also someone has written "03 LOW" in my engine bay. So whats the best way to know for sure what I have???.