I just got a set of 12" wheels off of a 2003 foreman. They should fit my 98 400 fine even though it came with 11" wheels shouldnt they? I noticed the part numbers for the rear hub on a 2003 are different than the 98's. It looks like the rear wheel studs on 98's are 10x30 while the studs for 2003 are 10x32. Why would there be a different part #?