aftermarket
4 Answers
any other motor would be too tough to swap in. just go turbo, much easier and cheaper.
Agreed. Build, turbo, done. Just make sure you BUILD FIRST. Don't assume that you can throw a kit on there and expect everything to be fine, at least not for long. Try JE pistons for some forged pistons and rods.
Look to the SVT Focus for inspiration. If you're not already part of a Focus-dedicated forum then its about time to join. From there, see what other people have built, are building and what sort of budget you have to work with.
I wouldnt waste money on an engine swap for a Focus. Just do your bolt-ons and save money for a real tuner car, not a domestic.