I fancy a set too , but can you remove them easily like to OEM ones ?? I guess they come in black plastic too ?????
Come on awesome speak up, your hang over must have gone by now 
I met up with MrW last week to pick up my cai tubing and he showed me his bonrath vents.. and removed them to show me how to get the tubing in and where to move the outside temp sensor and horns too.. they seemed easy enough to get in and out.. maybe slightly more fiddly than the oem parts, but not too bad.. a coupla seconds 
rfsteel - Yes mine are those ones - ?30 and I got -10% forum discount on a bulk order of bits.
Jace/Tylerama - they are a piece of cake to remove - a small flat bladed screwdriver in the edge facing the numberplate eases the clip off. I remove the off-side one to fit the towing eye on trackdays[^]. They are black plastic and mine have been sprayed Diamond Black.
You can't see in my pics but the hole has a moulded plastic mesh - if I had a different coloured car I would paint that black.....
Pipe to Channel Adaptor - 100mm pipe or 110 x 54mm Channel
With a small bit of fabrication to the above part to the squared end, this could be mated to the rear of the vent, causing a seal. Then fitting the CIA tubing to the circular bit would enable a sealed fit.
I suppose the only limiter is the room behind the air vent in the bumper.
Seeing as this part only costs ?1.49 I shall investigate further.
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