Track Mods in Colombia, ride height issues

[Mustangcol]

I'm new to the mustang world, and I recently bought a 2017 Mustang GT Premium in Colombia.. It already scrapes entering some parking garages and I have to be careful with some speed bumps. There are some good mountain roads and a track here so I would like to do some suspension/brake mods. I'm thinking if its possible to get the performance I want without lowering the car, like installing 20" wheels, and finding used Ford performance pack stuff in USA (k-brace, strut tower brace, etc.) and stock ride height springs that are a little stiffer? There's a lot of speed bumps here. With some speed bumps I have to be careful with the brakes because a little brake causes the suspension to dive and it scrapes the undercarriage. Any recommendations?

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