To the OP: Your question is unclear as to what you're actually hoping to do, which is why you likely didn't get many replies.
If you want an easy bolt in solution with no wiring, start with a later model FXT or import a JDM if you're okay with RHD.
If you're able / willing to do wiring you can pretty much swap whatever EJ based engine into the Forester.
Look at teacherman's thread and other swap threads around the forum. It's always a bit of work, but you don't necessarily need to go into the minutia that teacherman did.
Yeah, why not pay more and do way more work for an inferior product?!
RHD vs LHD aside, I still don't see how teachermans GD STi swapped Forester is inferior to a JDM FSTi?
Is the EJ205 now better than a EJ257? Or the FSTi auto (or 5 speed when available) better than the 6 speed? Brembos vs 4 pots?
Would importing a JDM FSTi be easier and cheaper than a conversion? Absolutely.
But 'better'? Debatable. Better than teacherman's conversion? Not a chance.
TLDR: Quit Trolling.