If someone posts something along the lines of "hey, look at this, it's really cool" they have to expect that some people aren't going to think that it's really cool. As someone that owns a Cobra, I feel pretty stongly about the Fauxbra issue, much as a Saleen owner probably feels about Faleens. Put all the body kits on a car you want to, but don't try to badge it to pass it off as something it's not.
Regarding the Shelby kit cars: Factory Five Racing doesn't sell their car as a Cobra, nor does it use Cobra badging. It is a "Factory Five Roadster" and uses FFR badging. If I ever have the space and time to build one, my license plate will be either "FAKESNK" OR "FAUXBRA" or some variation of those.