Okla. Stat. tit. 47, § 47-1105.3: Necessity of vehicle identification number -

Obliteration, erasure, etc.

Every vehicle shall have and contain a vehicle identification

number, which number shall not be obliterated, erased, mutilated,

removed, or missing. This section shall not affect those persons

authorized by law to have in their possession a motor vehicle on

which the manufacturer's number or numbers have been obliterated,

erased, mutilated, removed, or missing.