Hi Robbie,
I have a carbon fiber overlay panel in my 7. The panel is 2 layers of 45 degree biased carbon with 4 layers of glass cloth. It is strickly for looks and does nothing structurally. The glass was used so there would be no carbon to aluminum contact.
It was vacuum bagged. I made it as a 48" by 16" panel the cut it to the stock alum panel after everything was set up. I attach the carbon with 4-40 stainless steel socket head screws using anodized red shoulder washers from the helicopter section of the hobby shop.
The panel is extremely unique and one of the most commented on items in/on my plane. I know of no others like it.
Regarding the carbon fiber, it is getting tough to get and is expensive because of the demand by Military contractors.
I can do a blank overlay for you but it ain't cheap. $300. This pretty much covers the cost plus a little for the labor.
Here is one overall picture. Contact me direct for a couple of close ups.
