Correcto. Sikaflex, RTV, any type of adhesive of the likes. Biggest problem primarily with the bonnet vents is that you have very little room on the back of the panels to glue the mesh to, and you also have to glue the vents to the bonnet. On original it has clips that hold it into the sump under the vents, but that got cut out with the honeycomb patterned grill. It's too windy and cold to go outside to take photos today. The bonnet vents are now both finished and awaiting going back in, I'll get some snaps of what I mean after I get back from work middle of the week.

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Air is for pussies.