Well,I thought I bought an 01 400EXC but now I'm not so sure.The bike has 01 decals(easily changed,I know),wider levers than 00 2smoke I had and an airfilter cage with three mounting tabs.My 00 2smoker had only one tab on the airfilter cage and the 2 and 4 strokes are supposed to be the same.The VIN# says it's an 00 so it's either a factory mixup or a dedicated effort to trick the new owner(me)into thinking I got an 01.What other differences are there between the 00 and 01 400EXCs?