Rolled 24k, figured it was time for the stock "platinums" come out. The whole process took about 1.5 hours, (ok, 3 but a lot of that time was bs'in with other guys in the shop). I put in the Bosch platinum +4's, since the local shops didnt have the NGK's I wanted.
What a difference... it starts quicker, idles smoother and has a more responsive throttle. I havent gotten on it at WOT, since it was wet out (still is) but I would expect to see some gains.

Also, the plugs I pulled out were burned and the gap was .07+ on all. Stock they should be near .050. The electrodes were white and the ceramic was a rust color. Looks like it is running a little bit (lot) lean?

Tricks and tips for doing the job

You'll need a host of 3/8" extensions (I used a 1, 2, 3 and 6" depending on the plug, a good ratchet, in addition to the plug socket. Also, FYI, heat sheilds are sharp!

1) STB must come out on all cars.
2) The rear pass plug (#8??)can be easily gotten to from under the car. Jack it up on the pass side, and you can reach up past the cats to get to it... just make sure the cats are cool!
3) The EGR stuff on the manifold on the pass side must be unbolted. Be nice to the gasket in there.
4) The 4 plugs on the drivers side... 20 minutes.
5) The plugs are angled towards the back of the car and pretty deeply recessed. That rubber insert in the spark plug socket is very useful!.
6) Keep that jack handy to fetch dropped tools/plugs. Nothing i dropped on the pass side was able to fall to the ground.

Basically the stock plugs are crap... at the 100k interval that they reccomend their replacement there would have been nothing left of them!!!! Good luck if you are doing yours... certainly worth your time and 50 bucks!