truck rear ends

[Jawman]

I have a 1932 BB truck with a 4 cylinder model B engine, 4 speed B trans. and the stock rear end. I might be coming a cross a 1937 Ford 1 ton truck that has a 2 speed Eaton rear end. and I think it has the original 37 trans. sense the model B is so slow I was thinking about finding an AA or BB 2 speed rear end, but found the 37 stuff first. my questions are:

1. can I use the 37 rear end in my 1932 BB?

2. does any one have any history on the Eaton rear end? I have not seen this type of rear end before. I am used to seeing the pancake style rears, but this one has a normal pumpkin with a big view plate on the back, but it still has the sealed type drive line housing.

3. does anyone know the different gear ratios of the BB and 37? another words is it actually going to benefit me with a better gear ratio?

4. is there any difference that might make me put the 37 trans. in the BB?

5. sense the wheel bases on each truck might be different, can I run an open style drive line like the modern day drive lines?

thanks for any help and knowledge before hand.