Sorry about the slow reply, it took a while to get the photos.
I took a standard disco airbox and connected the disco filter-turbo pipe (the one with 2 x 90 degree bends in it) to get an idea of where the box would sit. Please ignore the messy engine bay, it's work in progress
On the nearside, I bolted a 90 degree shelving bracket to the box and bolted that to the inner wing top.
On the engine side, I took a small piece of stainless and bent it to about 45 degrees on each end. It bolts to the bottom edge of the filter box and the inner face of the wing top
The cyclone breather pipe has now been routed around the back of the engine. The box seems to work well and I'm happy with it. Mine had quite a few holes in it so remember to seal those up if you are going to play in water, along with any bolt holes that you have to drill. The mount seems to be pretty substantial, any small vibrations are taken up by the pipe and there's certainly no give when you shake it.
This pic should give you an idea of how high up it sits - no issues with the bonnet clearance so far
I'll hopefully get the windscreen/snorkel and pipework on when I'm back in UK in 2 weeks, let me know if you want any pictures of that.