has this car appeared in another thread recently? the VIN is number 155 so early in the production run.
Same answer as the other (imaginary) thread - any main dealer can help. Start by asking for parts department and a quote for < any part > maybe rear reflector from bumper. (this was about £5 last. time I needed one).
Maserati customer care may be able to help you, you can reach them on info@maserati.com or by phone via their website, they have been very helpful to me in the past