I do believe that my early K3 has a plastic chainguard on it. A Buddy of mine in Texas just purchased a K3 without a chainguard and he is trying to find one, and his supplier said that K3's were metal, and I told my Buddy mine was plastic. i will double check tonight when I get home. So, what would a CB750 plastic chainguard in nice shape bring me $$ wise guys? And what should I expect to pay for a metal one?