Track Builder - Forza Horizon 3: Hot Wheels Expansion Pack

Swap out a stunt for another of your choosing using Stunt Swap Blueprint - 10

This is easy to do. Once you unlock a race you can click on Hot Wheels Stunt Swap Blueprint. From there you can swap out any stunt you like to something else. Once you can change the Stunt you need to complete the race.

Hot Wheels Loop-the-Loop Track