(a) If an identification number for a motor vehicle or motor vehicle part is removed, obliterated, tampered with, or altered, such vehicle or part shall be subject to seizure and forfeiture to the United States unless—
(2) such motor vehicle or part has a replacement identification number that—
such removal, obliteration, tampering, or alteration is caused by collision or fire or is carried out as described in section 511(b) of this title; or
(b) All provisions of law relating to—
the seizure and condemnation of vessels, vehicles, merchandise, and baggage for violation of customs laws, and procedures for summary and judicial forfeiture applicable to such violations;
the disposition of such vessels, vehicles, merchandise, and baggage or the proceeds from such disposition;
the compromise of claims and the award of compensation to informers with respect to such forfeiture;
shall apply to seizures and forfeitures under this section, to the extent that such provisions are not inconsistent with this section. The duties of the collector of customs or any other person with respect to seizure and forfeiture under such provisions shall be performed under this section by such persons as may be designated by the Attorney General.