I spoke to the guy a week ago.
Unfortunately the car has zero paperwork, zero history and nothing to maintain any provenance or prove accurate mileage
This is his reply
I do not have all the service records for the Maserati. I am the second owner and purchased it from San Francisco Motor Sports. The service records did not come with the vehicle when I purchased it. The odometer read 16,400 miles when it arrived, so I have only put ~2400 miles on it over the past few years. SF Motor Sports did a complete service and fluid change prior to transport to me in AZ. I drove it to Formula Dynamics in Las Vegas in January 2016 for the drive-by-wire install and had a complete fluid change done at that time. I have the receipts for the work done at Formula Dynamics. At the time it was fully inspected and absolutely no issues were found. I had them check the clutch, and it showed little wear with plenty of remaining life. It also passed emissions testing here in Mesa, the certificate will be included.
FYI, the only place I drive it is Cars & Coffee in Scottsdale, AZ on the first Saturday of the month, when I can make it. The last time I have driven it farther than a few miles was in Febuary 2017. It has never been tracked, raced, or abused. I hardly drive it, so I decided to sell.
I will include all records that I have with the car. If the full asking price is met, I will have it fully serviced at Earnhart Maserati in Gilbert, AZ prior to pickup/shipment.
If you'd like to discuss further, give me a call.