It isn't that easy and "practical" as it sounds in theory. If it was, no one will buy expensive fast cars and keep adding turbo to lancer, yaris and tiida's. Adding turbo to a non turbo car is very risky as all items in the car is design to work under certain limitation and adding trbo horsepower will def go exceeds critical engine parts limitation. For adding turbo, you have to modify lot many engine parts, exhaust parts, cooling, brakes, differential etc. Even if you spend 20k to replace all parts to fit 1200 dhs turbo then RTA will fail your car as its a risk to you adn other road users as car might explode anytime.