Is there a 9-seater available? If it's a 13-seater, can it be modified to a 9-seater? What procedures are needed?

The original imported vehicles are all 13-seaters. There will be a supplementary announcement later for 9-seater documentation. Vehicles with 9-seater documentation tend to be more expensive. A 13-seater vehicle can be modified to become a 9-seater. The specifics of registration will depend on the local DMV policies.

Do not change.

If you want to make changes, you need to apply first, go to the DMV for approval, then head to the modification shop for the changes, and finally update your registration certificate.