Help

I have a 91 Galant GSR. I'm totally in love with this thing, however the engine is blowing blue smoke real bad. So I'm debating on buying a new Galant (which I can't find around here) or putting an engine in it. (Which I would like get something faster then the stock 2.0 16v DOHC i have in it.) What do you guys think i should do? If you think I should put a new engine in it, what kind and how much you think it will run. I'm new to the Mitsubishi family, and dont know a whole lot. I know I'mm willing to put money into it, just not trying to break myself doing it. I have not been able to find a Galant around here at all. I have 2 of them and they both blow blue smoke. Help me please lol.