If you are going to turbo charge the USA IQ you may not be able to get much out of it.
The reason i say that is that the 1.3L engine that come in the USA version has a 11.5:1 comp ratio. That's pretty high for a turbo, you may be able to get away with really Low boost, but detonation will be your worst enemy along with that high comp. ratio.
Premium fuel will be a must.
I would rather have the Turbo Diesel, It comes with a 6 spd manual Trans, & it has a lot of Torque 140 ft lbs. for that small/light of a car that would push you back in your seat, and move that car pretty well.