I heartily recommend the Tyga carbon-fiber rear hugger for the SP2.
It's only around $99, and while more expensive than the CBR600RR piece, it perfectly fits the contours of the SP2 swingarm, which the CBR unit does not.
It also does not require any drilling and uses the OEM mounting holes.
You can install this unit in a matter of minutes.
Plus it looks wonderful!!
you don't have to drill the swingarm to make the CBR hugger fit. a small peice of velcro or other will work fine. use a well not on the one side and a small rubber grommet on them to space them up for taller tires it is not that difficult
Also if you want you CAN drill a small 4mm hole in the back bone with a cordless drill and thread tap it in about 6 min