Turbo swaps are always easy, its finding where OTHER people found the limits so you don't have to which can be challenging.
Luckily for me there is a decent Versa tuning scene stateside, so I know what my plans are for the Micra. (Things go kaboom around 9psi)
I believe the Supercharger kit for the Mirage on the market now makes 4.5 or 5 psi, so you know you can go at least that high without supporting mods, which lands you around 110 or so horsepower.
View my fuel log 2018 Mirage ES 1.2 manual: 43.5 mpg (US) ... 18.5 km/L ... 5.4 L/100 km ... 52.2 mpg (Imp)
After more research, I'm thinking supercharger.