I have a friend on Vancouver Island who needs and O/D unit for a '59 BN4. He said it has a 28% reduction and 7/8" input shaft. I have an extra O/D with the serial number 22/3009/014393. Can anyone let me know if this O/D would fulfil his needs? If not, anyone out there in the northwest have a suitable O/D unit? Cheers, Mirek '60 BT7