JONATHAN MCDONALD: The Performance Distributors Screaming Demon ignition coil has a tiger winding and a more concentrated winding for increased spark energy. This increased spark energy allows you to open up your spark plug gap to about 65 thousandths on a naturally aspirated car. It also features a brass terminal for better conductivity and increased corrosion resistance.
Replacing the coil on your '86 to '93 5.0 Mustang is extremely simple. First thing you're going to want to do is remove your coil wire, then unplug the electrical connector. Grab you a nut driver with a swivel and a 7/32 socket, and remove the four 7/32 bolts that retain the coil to the bracket.
Remove the stock coil. Put your new coil into place. Reattach the four bolts. Plug in your electrical connector. And reattach the coil wire.
Now, the Performance Distributors Screaming Demon coil is so hot it's not recommended for use with stock plug wires. You'll want to upgrade to something like their Live Wires ignition wires. Plus, you get to open up your spark plug gap to a whopping 65 thousandths on a naturally aspirated application. Now, for more Mustang ignition components, check out latemodelrestoration.com.