Faster engine for my car

i wouldn't spend the money to swap it but rather use the money as a down payment for another faster car.

Instead of paying 6000 dollars for a better engine and another few thousand for the installment just buy a new car. Or buy a small turbo. Don't get a big one because the boost may be to much for a little mirage

what me and my crew do in Puerto rico to the mirage. we don't buy a bigger engine or spend money of a good turbo. we just spend the money on making it all motor. get racing performance pistons valve piston rings ect. better than a turbo and spending money on a different engine.

Is there anything I can do to make my es 2018 Mitsubishi Mirage go faster any help would be helpful