I recently bought a 76 KZ400 (images attached). It has a little over 8000 miles on the odometer but it should be mentioned the speedometer cable was disconnected for sometime before I owned the bike so I am not sure the exact mileage. The bike is mostly stock from what I can tell. There is one electrical part that is after market and I believe it's the regulator. I am also aware that one of the mirrors is not stock as can be seen in the second image. The reason I am posting is when researching the bike to find parts needed for it, I have been finding parts that don't seem to be correct. I was curious if that could be because of the OHC seen on the side cover. Not all KZ400s have this and was hoping for some clarification of what this meant as to help speed up my searching. I am in possession of the KZ Series Shop Manual which has been a great help. My only issue is that the shop manual does not give any part numbers or anything of the sort. Any advice about where to find parts would also be greatly appreciated. I apologize for such a winded post but hoping this gives enough information for people looking to help. Thanks for reading!