I assume the airbox topic has been discussed, but I tried a search and kept getting an error message. So ...... did any of the K1 through K6's come with an airbox that had no markings at all? Today I picked up what looked like a stock ribbed airbox for a CB750 K2 - K6. After cleaning it, I realized it had no markings at all identifying it as a Honda airbox, even though it is identical to the one on my CB750K3. So I thought it might be a reproduction. Searching the web, I found some sites where "unmarked" airboxes were mentioned. Thanks
