Direct answer
Choose a signatory from the register your registration authority publishes for its scheme — VASS, VSCCS, Approved Person, or the local name. Choose a workshop that will work to the section that signatory cites. This publisher does not rank commercial operators and does not republish the old automotive directory’s business listings.
What to send
VIN, state, the intended change, photographs of the car now, and a request for the VSB 14 section they will use. A workshop that cannot name a section is a styling shop. That can be fine for a listed approved item. It is not fine for a certified code.
Related
Getting engineer sign-off, automotive directory (rewritten as a how-to, not a listing).
