Ford has released a supercharger upgrade kit for (I think) 2017 and later Mustang GT. It must be installed by Ford or ASE certified mechanics to keep the warranty. I think the car will have about 700 HP with this kit. This may be the best bang for the buck!
Here’s a little trivia for you.
The Jap Zero, single engine warplane of WWII, weighed
about as much as a SUV. It’s radial engine produced about 950 horse power. If you can imagine driving an SUV with 950 HP, that’s what handling a Zero was like.