Important Question About Cop Car

[bt1-van]

i got a query that i wouldnt mind knowing the answer to so if anyone can help me out id appreciate it, i got an xf bt1 pano, and im thinking about getting a spray job to match exactly what they used to look like back in the day when it was a dvy vanm, only thing is would their be any restrictions on getting it painted this way if their is could i just adjut something minor to make it look the same but not identical?