These were specially made by a buddy of mine about 10yrs ago.  They are an exact identical match to the factory "Shelby Z" decals found on the upper black plastic molding that runs along the top of the door on the 87 and 88 Shelby Z.      
 
I searched and searched but couldn't find a good pic online of these decals on an actual car, so I went out in the shop and took a pic of our Flash Red 87 Shelby Z with 5k original miles on it to illustrate where these decals go.    We only have this one set.  Price is for the pair/set.
 
The last image is of the backside of the decals.