I have another CDT (short version) carbon fibre number plate holder for sale. Fits 899/1199/1299. Costs £200 new but has a few flaws in the weave which for most would probably be acceptable but I am a fussy barsteward. Details as per the link below. PM me for further info if required. Looking for £59.99 Full ad here: CDT Carbon Panigale Number Plate Holder
Yes pretty straightforward. You will need to replace the M5 bolts that hold the rubber stalks to the indicators and replace them with a short (4cm) length of M5 threaded rod. This is held in place with an M5 nut and washer. To mount the indicator you'll need a nut and washer on the inside of the CDT part to retain them. The LED number plate light can be held in place with M3 bolts and nuts. The aluminium collar that is bonded inside is for you to mount a cover to, which seals the aperture and protect the wiring. I made one up out of aluminium. The whole assembly bolts to the subframe as per the stock plastic part. If you want more details have a look on the Facebook page of my project (address below) where you can see the fittings and cover made. Hope this helps....Topo