Yep well the one I have is pretty much like that but in 3 pieces, with the rear section being oil seperator box with a line from the crank case breather going to it. Some tricky use of silastic will be needed. And I need spacers which are being made up, between the throttle body and bottom of air box. Nothing is ever easy when straying from the norm. It has been suggested that the air pressure sensor be relocated to behind the nose cone, but I'm not to sure about that. I would assume that local air pressure is more relavent than ambient air pressure.
I've got a one piece Corse 94' carbon airbox and also the 3 piece carbon Corse used up to 93'. The carbon 1 piece air tubes (X piece) are also Corse 94'. I'll be selling the 3 piece carbon airbox as I've settled with using the 1 piece unit + frame mod. The 3 piece box was used from 91' to 93' so would suit any 851 / 888 or 926 and has the benefit of the frame fail not needing to be modified. I'm trying to resize my pictures and when I manage I'll post pics. cheers