78 sigma tc conversion

[pigginit]

hey guys a while back I bought a g63b det motor and I just bought a galant fwd na 4g63 as I tried to fit sump up off 4g63 it is different but more asking if I just wasted my money and can I use the g63b as the bottom end is brand spanking new and I would like to put in my 78 ge sigma both engines are narrow as well plz comment as i need all the help I can get I think plz cheers neil