[gereed75]

Brian, also a good looking start. My first one fit inside the cowl, but for a prototype, you could use duct tape to seal the bottom and hold it in place for a try.

The only other drawback to an aluminum one is that, in my case, my transponder antenna is near the fairing. I flew with the aluminum fairing for about two months and did have one instance of "not receiving your transponder". I was at low altitude when it happened and suspect my antenna was blanked by the aluminum fairing.