Hi everyone I'm new so if this has already been talked about i'm sorry in advance.. I recently got a 1998 KX500 that has less than 10 hours on it. The bike is 100% stock. I only ride trails and am wanting to know of any good mods to do to the bike. Also I have heard about converting to a 18 inch rear wheel?. Also does anyone make a auto clutch for it? relvoc use to but they are out of business now..Thanks