I understand that it's cool to have a foreign market motor, but in all honesty it's not like jdm engines are the "end all" motors. The majority, if not all of the aftermarket or custom mods to the engine, tranny, and suspension that you can find for your pro will give you gains over stock, even JDM stock.
If you're looking for more power, start modding under the hood. Most swaps will put a giant hole in your pocket and honestly, you could invest that same ammount of money on your domestic market engine and be making a ton more power.