I'm thinking of using a late model R1 shock on my 86 750. I know the length and stroke are very close, and they are cheap enough. I've read of others using them over at OSS. They are a relatively easy mod to make fit. Except, the battery box must be modified/relocated. I vaguely remember the legendary Yosh box. Didn't it mount somehow on the side? If anybody has pics of one installed it might help get my brain moving on how to modify mine, or where to move it to.