Poking around eBay I've noticed that there are a plethora of take-off rear damper/spring combo's from various modern sport bikes available to be had for a song. I realize that most of these are used on slightly lighter bikes and that they are not properly sprung for a CB750 because they are single damper setups, but why not use a pair and just swap in softer springs? Surely if it were that simple it would have been done a million times already, right?