As others have done before me, I decided to go the route of using the bighead fasteners rather than bolting through the fiberglass for the front wings. My package of fasteners arrived today; QTY 8 SB32-CableTyrap-15. Note, the website has the 12mm bigheads but you want the 15mm ones. I sent an email to Szilard Lakatos via their website and he was able to get me the 15mm ones with no problem. The only minor issue I have is the FS Acrylic bonding agent isn’t exportable from the UK to the States so will need to find something locally.
http://www.bighead.co.uk/ is the bighead website.
http://www.caterhamr500.co.uk/2014/03/build-day-twenty-four-front-cycle-wing.html is the link to Daniel French’s blog with instructions to setting them up properly on the car.