This gearbox i got off a friend, its from the "W" family, its 5 speed and the bell housing that came on it is to match up with an "R" series motor. so im told,
here are some pictures....
http://img244.imageshack.us/img244/3678/dsc060212hb.jpg
http://img244.imageshack.us/img244/3088/dsc060225pa.jpg
http://img140.imageshack.us/img140/1850/dsc059858af.jpg