One thing they left out.. Only do one plug at a time, or wire them so you remember the order. Otherwise timing can get all fugged up.

 

but hey, you will have a misfiring system like the pricier EVO's

 

Some (possibly) helpful additions to the thread....

1) Change plugs on a cold or cool engine. The sparkplug threads on aluminum heads can be stripped out if the head is hot.

2) If you have access to compressed air, shoot some down in the sparkplug holes with packs/wires off before you unscrew the plugs. If there's any large chunks of gunk, you want to try and prevent it from falling in the cylinder once you take the sparkplug out.