I just bought a '76 YZ400! I know, it's a sickness. It seems to be all original and unmolested, except for the gas tank. (pics to come later). Seems rare to find an old dirt bike (or any old motorcycle) that has not been tampered with, or TRASHED. The gas tank has been painted flat black - possibly to hide some bondo repaired dents? We shall see. The rear shock has NO damping, none, it is gone. I'll do a shock rebuild search, see if anyone does rebuilds, or possibly can tell me how it's done. Yeehaw, another project! edit: Is there a YZ400 thread? I did not do a search.