ahh im glad some ones interested, what i did was to remove inner air vent assembly, just unclips, then u can remove main vent unit, i had a mate lay up a fibreglass layer on the front surface, for me, then u need to cut a hole 52mm mine. got it trimmed in alcantara (grey to match a pillars) fit gauge and then bond to main vent front edge, can easily be removed and back to standard in about 5 mins. was quite lucky as i had help along the way...