Before using this model, you need to add these lines to the .ide file where you installed the settings for the LibertyPlates mod.

# plain white plate
35 null 0 4 0 1.083 0.722 -0.058 0.021 0.0 0.0 0.0 1.0 &&&^^^^^ 0

Then add this line to the bottom below the other car model names.

# plain white plate

mesos 35