I understand your feelings there for sure. I don't know if they all have particular codes. I think the gear ratios would generally be the same for each engine type, but some models have different final drives.

If the breaker has the reg/VIN of the car, this site will tell you the final drive: https://www.etis.ford.com/vehicleReg...5C3A5.fcvas501

Still not a guarantee but may be some help.