I ordered an evotech tailtidy as the oe numberplate hanger is a bit of a disaster and spoils the back of the bike in my opinion.. The new Evotech part looks like a really well made bit of kit, comes will all the necessary fastners including new numberplate nuts and bolts, LED numberplate light, clear colour instructions and is superbly packaged in protective foam. It even comes with a rear reflector should you feel the need to fit one.
I have no affiliation to the company at all, I just thought I'd share my experience of dealing with people that seem to be a professional outfit with well designed and made products. They answered emails quickly and were very helpful. Im waiting for my ahem 'show sized plate' to arrive and then I'll fit it but I have no doubt it'll go on easily enough.
Also, type Panigale 1199 into the coupon section on the online order form and get 10% off.