CST - Custom Sport Truck ???

[gt40racing]

Okay I picked up a clean 1969 CST C-20 which I am working to return close to stock but with a little performance twist for fun. The CST package of my truck consist of T-400 trans, 4:10 12 bolt rear end, full gauge package not including tach, and one you don't see to often on regular trucks is the light over the back window on top of the cab. Is there anything else about the CST trim I am missing? Thanks in advance for your help!