literally installed a bestem full pan last weekend on my '12. I'll give you exactly how I did it, and how I'd do it a second time. This is how I did it. U might have a better way, might have a worse.
Remove eo fairing. This means oe belly, and for me, the red gill panel with the bmw and RR badge and one on clutch side. Seperate gill panel from oe belly.
With carbon pan and gill panel off the bike, line up the fitment between the two, and drill from the inside out, a small hole through the gill panel nut and into the carbon. Repeat for clutch side. Now the 4 holes on the carbon are exactly where they need to be.
Mount the oe gill fairing and matching fairing on clutch side. Mount carbon on bike to the 4 holes you drilled.
For the final 2 holes (6 total), 1 by each rearset, I pulled the carbon out a little when mounted, guesstimated where I needed to drill (these holes are a cake walk), and put a .5 or 1 In rubber spacer between the carbon and bike then put the long bolt back in.
6 bolts total holding mine on.
I trimmed the carbon near the chain with a dremel it was too close. It cuts clean, as if it were plastic. I didn't reseal the cut edge w epoxy bc the cut edge turned out better than expected.
Any more questions ask away
'07 G650 Xchallenge
'99 Ducati 900SS