Import the car into your scene.

1. Go to  File -> Append...
   
   
2. Navigate to the .blend file and open the 71_HEMI_Cuda.blend
   
   
3. Select Collection-> HEMI Cuda and click Append.
   

Change license plate.

1. Create a image with the background of your preferred license plate.
   
   
2. Create a black and white image with the text.
   
   
3. Slightly blur it out.
   
   
   
   
4. Load your files in material node for the License Plate - Frontside.

     5. Set a color and adjust the contrast with the Color Ramp that only the top part of the displacement is effected.