Code8 Shelby Z

[Dodge-N-Shelby]

I have an 87 Daytona Shelby Z that has a secondary body tag on the rad support that has "CODE 8" on it. Anyone seen such an animal or have an idea what it means. Car is a T1 automatic red, grey leather and T-Tops. I do have a door jam decal which states being altered by Cars and Concepts but I have seen the decal before but have yet to see another CODE 8 car. Also, I found a Shelby Shadow CSX that has a build date of 4-87 and a Shelby decal dated 11-87. Is this car a 87 or an 88. I talked to the owner a couple months ago and it is for sale but just curious what year it would be considered before I go back and get a price from him. Thanks for any info, Dave.