tellme what tranny this is out of

Rob it has 2 shifter mounting places and I found a 2 beside the SS 2 stamped on the tail shaft, nothingelse I can find and it has been cleaned and painted. Thanks for any help, hell al I'm asking is a 100 bucks and everybody wants it but ain't got the money and I don't have a layaway plan. what is the BB 14 70 on the front stand for? steve