...hey Gee, r u saying there are aftermarket kits for this? I was thinking of fabbing something up my self. Grabbing a late model sport bike shock off ebay and fab it up...
If there are kits for this, they exist only in the bowels of japan, and I can't read enough japanese to find out. It would not surprise me though. Spondon and Harris in england might have more information about it. For the time being you are in severly custom waters.
I assumed that in converting to monoshock you would be using a rear swingarm setup off another more modern bike, espically since the rear stock swingarm may be inadiquate for this conversion (the K bike flexes too much, don't know about the F). All I was saying is if you are going to convert, get the whole setup off the donor bike, the wheel, swingarm, shock, shock mounts, dog bones, etc. You can't just weld mounts to your existing swingarm and frame and then grab any old shock and stuff it in there, there is a science to it. Norton used to have a monoshock swingarm in the 60's that the tz750 copied, they were laydown shocks that ran across the top of the frame at an angle and were huge, the swingarm was also extremely heavily braced. That is probably the only way you will get your old swingarm to work with a monoshock. For modern bikes, the shock drops below the swingarm and is attached with some dog bone linkages which can be used to tune the suspension. mismatching the shock with the dogbones can have disasterous results. The way involving the least engineering is to just adapt what already works on another bike to your bike, and by adapt I mean the whole thing.