What color is the smoke?
Is blue, then you might have a clogged PCV system or it's getting past the rings. Do a compression test.
If a white/grey smoke, thats coolant and can be fixed with some new intake gaskets.
And putting that 05 L26 motor (if car was NA) will not be a direct swap if going into a supercharged car (L32).
You can swap the block, but your heads, lower intake, supercharger and everything else must be swapped over. Then you'll need exhaust mods because now you'd be running a high compression block and you'd want it tuned in my opinion to just be safe.
