Try Premier Clear Bra. They have a facility in Fremont CA and have done just about every car you can imagine; from a Veyron, to a Ford GT and everyday cars like BMW's and Lexus.
http://www.premiermobilegroup.com/
The "gallery" is a good way to see what cars they cover; in "Other vehicle" it appears they wrapped a 289 Cobra; might have been an ERA (forward 3-rd leg on the roll bar). If they're trusthing quater million to million dollar cars with their covers, I'm guessing they're worth looking into.
Good luck.