I have a stock '93 XR650L with a 21inch front rim and an 18inch rear rim. I would like to make my front wheel an 18inch rim also. Whats the best way to go about this? Is it easiest to lace a rear 18inch rim to the front hub? Would that keep you from having to reconfigure any of the from brake system? Any expericnce or help with this topic would be much appreciated. Thanks.