Date Coded Spark Plug Wire Set for 1961 B-Body & C-Body 361, 383 & 413 V8 Engines without Ram Charger Intake, Date-Coded 1st Qtr 1961 (1-61). Mopar Authentic Restoration Product - all wires are stamped with date code (same as OEM wires); illustration shown may not show date codes, and is for display purposes only.