; and (B) the make, model, vehicle identification number, date of purchase, and a description of the motor vehicle or, with respect to a motor vehicle part, a description of the motor vehicle from which the part was purchased. (2) Duration of retention Such person shall retain such information for a period of not less than two years. (3) Definition For purposes of paragraph (1), the term precious metals has the meaning given such term in section 109–27.5101 of title 41, Code of Federal Regulations. . (c) Prohibition on sale of partial catalytic converters It shall be unlawful to sell or purchase any partial or de-canned catalytic converter parts or any catalytic converter which has had identifying markings removed or otherwise tampered with. (d) Regulations The Attorney General shall prescribe regulations to carry out this section and the amendments made by this section, including the enforcement and penalties that apply to a violation of this section and the amendments made by this section. 5. Criminal penalties (a) Theft of catalytic converters Chapter 31 of title 18, United States Code, is amended— (1) by adding at the end the following: 671. Theft of catalytic converters Whoever steals or knowingly and unlawfully takes, carries away, or conceals a catalytic converter from another person’s motor vehicle, or knowingly purchases such a catalytic converter, with the intent to distribute, sell, or dispose of such catalytic converter or any precious metal removed therefrom in interstate or foreign commerce shall be fined under this title or imprisoned not more than 5 years, or both. For purposes of this section, the term precious metals has the meaning given such term in section 109–27.5101 of title 41, Code of Federal Regulations. ; and (2) in the table of sections by adding at the end the following: 671. Theft of catalytic converters . (b) Definitions Section 2311 of title 18, United States Code, is amended by inserting after for running on land but not on rails