Looks very neat there Frank.Is that a Snook front end I spy? Mine has a Mikuni on it and Adrians is a little hotter in the engine and pipe dept. His frame is also slightly different with alonger head stem than mine which was an enduro model I think. They go quite well and do have a reasonable scope for porting. How is your clutch as they are one of the worst features. I am running modified Honda clutch plates and have finally got it running so it doesn't go out of adjustment after each race. I can now even get it into second on the start line. I reckon they are a fantastic handling bike which can give you a huge amount of fun. Enjoy!
G,day Frank good bike sorry i cant help with the aircleaner ,just post some wanted ads around the net .Its not the best setup and airfilters dont last long because of the way the clamped in it cuts the filter seal but its worth it riding a YZ. Hilly