If you are looking to upgrade your stock coil or want to compliment the performance of your MSD Ignition, the Blaster Coils are the right choice. The Blaster 3 coil is designed for use with MSD Ignitions. The Blaster 3 coil shares the same special windings and high voltage output as the Blaster 2 coil, but does not include a ballast resistor. When you are using an MSD Ignition Control, the ignition is responsible for delivering the voltage to the coil, so a ballast is not necessary. The Blaster 3 coil features an extra tall tower design to improve the coil wire attachment and spark isolation. Supplied with a 90 degree terminal and boot.