Ya know what I really want...not a huge thread-jump I promise........
I want a swing arm for the CB450/500T that looks like a hardtail. Something that'll bolt into the swingarm pivot, maybe a 4" stretch with a small mono-shock that could be hidden under a tank or just under a solo seat. Really only needs a couple inches of suspension travel and hell...I can make the shock if Fox doesn't have one in the catalog that'd work. It'd take something with the basic dimensions of a bicycle shock (think mountainbike) but obviously beefier to account for weight etc.
A kat could simply grind off the rear "sub-frame", weld on the top mount for the shock and a loop for the solo seat. The swingarm would have to drop down at the base of the pivot so it'd look more like a hardtail but that shouldn't be all that difficult to fab-up.
You know....in a perfect world..... 8)