I was wondering if anyone knows if the 78 K had forks already drilled for a duel disc set-up? I have looked at the forks and it looks to me like the necessery mounting holes are there! The build date was 12/77, maybe they didn't have any K forks so the put on some GL or F forks? This bike hasn't been modified to my knowledge, so it would have come from Japan like this. I would like to put duel disc on this bike. Thanks for your help.