carolinatrophy,
Nope, the factory does not offer the US decal and no one has been able to do so yet. I'm sure it can be done but since no one has a unmounted one to duplicate, it will be tought. Also, they were unique to the individual car. For example, mine is red and black. On the black CS's they were silver and black......the white cars were black and white etc.
The Euro CS decals are available here .....
http://www.porscheshop.co.uk/acatalog/porsche_911_badges_decals.html#a3924 I have some made from a US guy and if they turn out good on the car, I'll post contact info.
Craig