If it is the original transmission the dealer should be able to provide you with this information from the vin.
Serial#
You must call Colt with the serial number to find out.
You can find the model and serial number by going to proofhouse.com.
serial number and model should be stamped in the the engine block on carburetor side middle or on housing where engine bolts to the transmission.
attached to the top plate
2.5 mercury serial no. OD992320 WHAT YEAR IS IT
The serial number of your 350 Turbo transmission can be found on the transmission. The transmission should have a specification tag. The tag should be on top of the transmission.
You must call Colt with the serial number to find out.
You will have to call Browning with the serial number to find out.
The serial number.
168407418
You will have to call Colt to find out.