Your local tax office has it. I called ahead to give them a heads up on it before I went. They researched it and when I got to the counter, it had been located and no problem.
Check it out:
TRANSP. 504.502
Statutes and Session Law
TRANSPORTATION CODE - TITLE 7. VEHICLES AND TRAFFIC
CHAPTER 504. SPECIALTY LICENSE PLATES
TRANSP. 504.502 CERTAIN EXHIBITION VEHICLES; OFFENSE.
§ 504.502. CERTAIN EXHIBITION VEHICLES; OFFENSE.
SUBCHAPTER F. SPECIALTY LICENSE PLATES FOR CERTAIN VEHICLES
(a) The department shall issue specialty license plates for a passenger car, truck, motorcycle, or former military vehicle that:
(1) is at least 25 years old, if the vehicle is a passenger car, truck, or motorcycle;
(2) is a collector's item;
(3) is used exclusively for exhibitions, club activities, parades, and other functions of public interest and is not used for regular transportation; and
(4) does not carry advertising.
(b) The license plates must include the words "Antique Auto," "Antique Truck," "Antique Motorcycle," or "Military Vehicle," as appropriate.
(c) A person eligible for the license plates may instead use license plates issued by this state in the same year as the model year of the vehicle and approved by the department, provided that a passenger car must bear passenger car or truck license plates and a truck must bear passenger car or truck license plates. The department may require attachment of a registration insignia to the license plate in a manner that does not affect the display of information originally on the license plate.
(d) License plates issued or approved under this section expire on the fifth anniversary of the date of issuance or approval.
(e) The fee for issuance or approval of license plates under this section is:
(1) $10 for each year or portion of a year remaining in the five-year registration period if the vehicle was manufactured in 1921 or later; or
(2) $8 for each year or portion of a year remaining in the five-year registration period if the vehicle was manufactured before 1921.
(f) The department may exempt a former military vehicle from the requirement to display a license plate or registration insignia if the exemption is necessary to maintain the vehicle's accurate military markings. The department may approve an alternative registration insignia that is compatible with the vehicle's original markings.
(g) A person entitled to specialty license plates or to department approval under this section may register the vehicle without payment of any fees paid for or at the time of registration except the fee for the license plate. An owner of a vehicle registered under this subsection who violates this section commits an offense. An offense under this section is a misdemeanor punishable by a fine of not less than $5 or more than $200.
(h) Notwithstanding any other provision of law, a vehicle issued license plates under Subsection (a) shall be required to attach and display only one license plate on the rear of the vehicle.
(i) In this section, "former military vehicle" means a vehicle, including a trailer, regardless of the vehicle's size, weight, or year of manufacture, that:
(1) was manufactured for use in any country's military forces; and
(2) is maintained to represent its military design and markings accurately.
(j) It is an affirmative defense to prosecution of an offense under this section that at the time of the offense the vehicle was en route to or from a location for the purpose of routine maintenance of the vehicle.