Bithoist is a tool on this site that can identify some stock .bins. You can upload your file.
If the code you're finding is on the blue cover it's possible the cover was swapped. Or it's possible that someone with some tuning tools used a V6 chip on a V8. Although this should produce a cylinder select error...

There are some 7060 / 7.4 calibrations that begin with B but the codes do not appear to go beyond BA--. AWBC is the only '7060 7.4 with BC in the BCC.

If you can post pictures of the ECM label and the chip w/ label we might be able to help. An original ECM/PCM would have a VIN number on the sticker which we might be able to decode. You can also use your tuning software to determine the correct mask ID for a definition file then look at the number of cylinders in the calibration to confirm the file is for a V6 or V8.

FWIW it can happen (although not often) that an OEM calibration does not appear in most of the OEM listings.