I have a 86 750 GSXR with a Penke shock, Race Tech emulators, and RT springs. I have raised the clipons about 10 mm and lowered the pegs 18 mm. I won't say it handles better than a 90's sportbike, but at street speeds it is a comfy ride. Works well on the wiggly roads. It is fun to ride ride. 200 mile long ride is my limit tho.
Brakes are OK with braided lines. Better than my 73 750, but not even close to a modern sport bike.
Mine is not very pretty like the Yamaha (painted flat black!!). I would love a RC30 or RC45, but I cannot afford those bikes.
Steve