I took a look at the end of the pinion shaft yesterday evening and the best I can tell it looked like it was stamped with a 6 in a little square and a 31 in a little square which would make it a 5.17:1 gear. Does that sound right? If it could be, then I would be happy as that is in the range of OK for the diesel conversion I would like to do.
And while the driveshaft was removed I checked the Brownie box that I have and it is indeed a three speed. It is also an under/1:1/overdrive. I still don't know what the ratios are but it's a start.
Jaysin