This is something I'd be interested in hearing about. I've got an 88 frame, 05 450r swingarm and linkage and will be running 250r carrier and axle. This build will be for my wife but I'd like to experience a more plush rear suspension.
I've got an Elka Stage 3 rear on my 86 and I think it could use a little more plush feel here and there. Like Hawaii said, I'm for modding my stock 88 frame. Not so much on the 86 at this point.