I did mine about 4 months ago, and made a fatal error... the new plugs were gapped to about 0.040" and I figured since it must be a high energy ignition system, that should be fine. Couldn't find a gap spec anywhere online, so left them there. Started and ran ok, until you put your foot in it, and then, major bucking from misfiring. Long story short, because it's a turbo, something closer to 0.025" seems to work much better. Ard may have better info on this than I do, but I settled on 0.025" after having the plugs in and out about 3 or 4 times. I did get to the point where I could change all 6 in about an hour. Practice makes perfect! Or at least faster.