Skspeed MSD 9009 EZKMSD KIT - Digital 6AL/Dist/Wires/Coil Jeep 4.2L Inline 6. skspeed MSD 9010 EZKMSD KIT - Digital 6AL/Dist/Wires/Coil/ - SBC Vacuum Advance. The circuits are updated with efficient components that help the ignition produce more power while drawing less current!
