Unity3D Kart script

I developers, i’m actually looking for someone who can make me a full script of an Kart system.
I’m looking for the exact same system of this game:

It includes boosts, jumps, speed, everything you can see on the video, the models will be included.

You can contact me using private messages or at [email protected].
We can discuss the price, i’m looking for something 95% simillar.