Picture below is what a 996 tank / tail looks like on a FI frame.
Things to think about:
1) the top tube of the frame is a different angle than the SBK one -- thus you'd have to modify the front edge of the tank to correct. Some people don't and just crank the back of the tank and seatcowl high -- but that looks wankered at best.
2) Clipons only. Regular bars will have clearance problems with the tank upper bulges
3) You will need to make a rear mount and support mounts for the front of the tank. Ditto for the seatcowl.
4) The airbox assembly won't fit.
5) If you are modifying the tank per #1, you might as well toss the airbox and drop the fuel tank bottom -- you can gain a fuel gallons of capacity then.
6) Do you try to emulate the SBK airbox assembly or leave that area empty (as per this image)
7) This would look ugly with a gauge pod sticking up above the triple clamps as per stock.