Cheers Dave,
The plastic plenum covers need to come off if you remove the windscreen, aerial or front gaurds. There is a rubber Strip which seals the rear edge of the bonnet - this is easy enough to remove. There is an obvious white clip on either end of the covers which clips into the firewall beneath the rubber strip. These clips break quite easily.
The rear of the covers appear to attach by clips near the bottom edge of the windscreen. These clips are impossible to get to.
A bloke at Obriens Glass told me to use a lever to break the clips and then glue the covers back down. This is his standard procedure for D22's. My wife was horrified to hear this and wants me to explore all other options.
We live in Alice Springs which means this car has seen alot of sun and parts are x Adelaide and expensive. I've replaced many plastic clips and rubber parts on this car as they always seem to break or perish. The plenum covers cost $290.00 and the rubber strips between the covers and the windscreen are $120.00 to buy. I don't want to break the covers...
I would like to think Nissan designed these covers with the ability to be removed and I hope someone can advise me of the correct Houdini act to get it done.
Cheers