Walk across the street to Mac's and flip through a Bargain Hunter...elsewise keep your eyes out in the two city papers. There are also those notice boards all over town (closest one to us is at the Community Policing Office on the corner across from Mac's).
Let me know what parts are you looking for, I can put out a call to a couple guys I know. They deal mostly with mopar and ricer parts, but a couple of them used to ride.