I thought about this when I did my deckplate mod... It is very easy to make a shield (which I did) down the side of the airbox (the side next to the radiator) and you could even do the top (which I didn't) so that outside cool air is drawn through the forward sheetmetal holes cut out directly behind the right head light. The holes are plenty large enough to let plenty of air through.

I used cardboard to make a template and since it fit so well, I just covered it with aluminum foil heating system tape to seal off and protect the cardboard. It's stayed in such good condition I haven't bothered to replace it with something more substantial..

The fender side and the bottom side are already fairly well closed off..