Review Fitment Notes to Ensure Proper Fit. SuperCoil Direct Ignition Coil Set -- 3 Valve Modular; For Use With Early Style 16mm High Thread Spark Plugs; Shorter Black 4 in. Boot; Yellow; Set Of 8; 3L3E Marked On Top Of OE Coil This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or part The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U. Manufactured California Certified vehicles; 1968 and newer U. Manufactured Federally Certified vehicles; 1968 ...