Double top-speed of the Vehicle Advanced Template

Like the title says: I just like to double the vehicle top-speed of this template. I’ve tried lots of different values in VehicleMovement (Inherited), but it seems like all values just have a minor impact on top speed ? I’ve read this somewhere here today:

Increase your MaxRPM, the Torque Value (vertical part of the curve) and adjust the Curve “sharpness” to your needs.

I did, without any luck. Is there a change to see a screenshot of some proper values to reach 200-300km/h ?
Many thanks in advance.