Ta Maf,
If the vehicle is more than 25 years old then it is very easy to ship a vehicle into the US, if it it less than that then your best bet is to contact the Maserati Club in the USA as they will have all the data required to submit so that it can be registered, specifically they should be able to provide crash test data, compliance testing and emissions confirmation to satisfy the DMV, it becomes even worse if shipping into California.
Don't buy a car in Europe without obtaining this information and talking to your DMV and get their requirements in writing, the best thing is to find a broker who can handle this for you.
We can ship the vehicle from the UK and customs clear it, but beware if you can't satisfy the requirements then the US customs will refuse entry and insist on sending it back.
Hopefully this link will help: -
https://help.cbp.gov/app/answers/de...-/-non-conforming-vehicle-or-car-into-the-u.s.
This link also should help: -
http://www.examiner.com/article/con...-into-the-u-s-you-may-want-to-read-this-first
That's why I say contact your countries Maserati Club as they will or should have experience of providing the data you need.
If the vehicle is in the UK then complete our online quote form and I'll sort things out for you and give you an SM discount, just mention it in the comments.
http://www.goldenchariots.com/quotes.html
Hope that helps?