Nice bike Graham, If your talk to Les from VMX Unlimited, he will tell you that most of the after market YZ plastics come from the same mould which is (Maier). I just finished drilling & fitting new Maier ones an hour ago on my 465H. (They are reasonably shiny, but I wouldn't say the side covers are the best fit as the holes don't line up the best. The front & rear fenders are a good fit). From what Les says, even xtreamyz are Maier! I Also have a set of VMX racing plastics from the US, but haven't tried them for fit yet. And VMX racing no longer do YZ plastics. I wish there was more to choose from.