^^^ mr_crust sells the heatsheild with a hole for the snorkles. However i think he makes them in aluminium, but if you ask him kindly enough im sure he can make you one out of fibreglass.
I have a aluminium one, and to be honest, theres not much difference. If you really are paranoid, buy some insulation and over it yourself. This will cost about 10bucks at bunnings or something??
Or, buy one from UAS.. Feed air thru the stock fmic pipiin under the pod, and feed air thru the front bar, by using some sort of duct type piping or pvc etc etc.