I want to change my plugs out now @ 100k miles. I've seen what the "direct ignition" part looks like and they are like $90 each to replace. Anyone out there changed thier spark plugs with "D. I." yet? Will I have to take the "D. I." Parts off to get at the plugs? If so is there a paticular way of doing it, ya know do's and don'ts? Or is it pretty str8 forward and hard to mess up?

remove the coil piece, take out the old plug, put the new plug in, WITH ANTI-SEIZE compound on the threads!!
torque to 15ft/lb.
put coil module back on. you're done.

Use NGK plugs, nothing else.