Our LS ignition coils are the top coils on the market today, featuring magnetic steel cores specially designed to deliver up to 15% more spark than OEM. They use a high resistant epoxy material for added resistance to shock and vibration at high RPM. This is a high-output replacement of the Delco D510C ignition coil. Fits many GM LS2, LS3, LS7, and LS9 car applications. Replaces Delco D150C type coil. Also included is our LS ignition coil relocation harnesses plug directly into the stock engine harness or TSP's extension cables. They are designed for easier hook-up when the coils have been positioned more closely together. and our relocation brackets You want an LS swap for cost-effective power it would provide, but the ignition coils on top of the valve covers just kill the look you're going for. Relocate the coils with these custom brackets from TSP. They are constructed of lightweight aluminum, come with all the necessary spacers, and because of their simple design they can be mounted just about anywhere. The brackets have been designed for TSP #81015 and #81016 ignition coils.