Kit includes 4 GM D585 Style truck coils and harness connectors that were cut off from the truck's original harness so you can hard-wire them into your cars ignition harness. This is cheaper if you know your wiring schematics.

These D585 truck coils are most sought after being that they have built-in heat sinks. Popular for LSX boosted motors cause they can handle more without cut in and out for a smoother torque curve.

GM CHEVY LSX D585 TRUCK COILS & HARNESS FOR MAZDA RX8 MIATA COIL SWAP UPGRADE.