All,
I have a friend from work who has his own little side business making signs. The wife does the graphic design section portion.

check out T2 Graphics .

I have asked and i beleive he has done the dolby digital emblem - so an outlaw emblem/sign should be no problem.

I have thought about doing something like this myself.
The majority of signs are made out of high density foam and then airbrushed to finish.