Sorry, some how I put this in the wrong cat on the first go. My cuz and I picked up a sweet 81 gpz that had been wrecked (just the front end). I have a parts bike (79 kz 650) with decent forks. However it looks like the gpz axle is different than the kz set up. Does anyone have any experience with something like this? Could I just swap the tubes? The only thing that is damaged is the upper tube on the gpz.