Niknock_HD posted a free plate tape script that provides and easy export for hiding the plate info from scanner apps. Where both of your scripts are free and would work well together, it would be a quick and easy implementation and add a lot more functionality to the script.
His script is here:
[FREE] [ESX] NKHD Plate Switcher - FiveM Releases - Cfx.re Community
and this is the export used:
exports('IsVehicleWithUndercoverPlate', IsVehicleWithUndercoverPlate)```