"Our E3.600 LST racing coil is a specially designed, high performance racing coil for the LST race motor, which is popular in upper midwest, super late-model racing. The E3 Spark Plugs E3.600 coil boasts a more durable housing and upgraded internals, which offers up to 15% higher voltage and 20% more energy than OEM coils. Ideally suited for racing applications, the E3.600 LST race coil brings added performance in supercharged, turbocharged, and nitrous applications, and also fits 1999 to 2007 GM gen III light truck applications in a coil-near-plug design. Coils have been tested per CARB standards and were deemed functionally equivalent in OE applications. Specific applications required - do not attempt to use cross reference data.E3 manufactures a variety of high performance coils specifically designed for motorsports applications. All E3 ignition racing coils are engineered to deliver the maximum voltage for all performance applications, and are manufactured to the strictest tolerances to ensure trouble free operation.Key Features- Shock & vibration resistant- High temperature epoxy provides excellent thermal conductivity- Delivers maximum voltage in all performance applications- Durable housing, upgraded internals"