Thanks Dave
Yes I wasn't so much concerned with gear count just correct it with the adapter.
I was concerned with ID of drive gear being different for different models Closed / Open drive trans - Yoke shaft size. Some of the 3 speed stuff looks identical.
This one looks good.
https://photos.google.com/photo/AF1QipMfqzWcGDeeFao4W2HL6-VeprmJg9aC6RE7tfFk

If the link works


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