Tag is on the carburetor C6ZF C A 5GD
The number stamped into the mount pad near the return (left front) is 6Z C and on the right rear pad 27.
Carburetor is missing the choke cable clamp and the accelerator pump cover. Pony makes the clamp and the pump cover fits all 2 and 4 barrel versions.
Carburetor has been sitting a long time and will need a complete restoration . I contacted Pony Carburetors Jon told me what to look for to make sure it was the real deal, it is. He sounded very excited to work on another factory HIPO carb if I wanted to send it in. Plus they have the parts should you need them.
I will entertain any offer.