Please note that the new gear lever is a gear dial, instead of the regular old gear stick, since the 2020 Ford Mustang Shelby GT500 has a different way to shift gears. [HOW TO USE GEAR DIAL] Instead of the regular old gear stick, it is a gear dial. So in order to use this, rotate the dial to activate the gears you wanted to activate. You can also click the dial in order to switch to manual mode. If you're in manual mode, press "a" for clutch while pressing "e" (To upshift) or "w" (To downshift)[ONLY FOR COMPUTERS]. To go back to "Drive", simply click the manual button again and it'll automatically switch back.
@Iguanalover for the original project and new car assets. @imkmj05 for the new gauges. @FIBERCAR10900 (me) for putting the car together and the new gear dial.