Sorry dude any vehicle that says police on it is required to be a police car even if it resembles the word police it wil apply because the public woudl reasonably think if it says it it must be. Yours is close enough but if your remove the stickers before court and show the judge that they are no longer there I can guarantee that there will be no fine.
The statute does not say it has to look like CHP vehicle to apply, only that it resemble a police car or have police equipment.
Yours says it on the side so it was a good stop.
A. M. Muhammed