I just got home with the K1 and K4. The PO also gave me a spare set of carbs, drag pipes, a new 4 into 1 and airbox. The K1 is a '71 but has the K0 side covers!! I plan to put the 4 into 4 pipes on the bike and also the K4 front end. The gold bike has 5 inch over forks, anyone need them?