So, i get the car back from the bodyshop on wednesday and decide to change out the sparkplugs since ive had an intermittant and then consistant miss for quite a while. Said plugs are changed along with a new set of wires to replace my 3 year old MSDs. I start on the passenger side, when pulling the plugs I notice that the electrodes on all the plugs are white, which I do beleive is the calling card of a lean condition, knowing that I have plenty of fuel from the 24lb injectors and the 255 pump, I decide to rule that out. Keep in mind that I just finished the passenger side. The o2 sensor on the passenger side is a Bosch aftermarket and I am on my second Bosch aftermarket. I swap the driver side and all the plugs look fine, the oxygen sensor on that side is an original 10 year old, 185k Motorcraft sensor. Now, for the past few months ive been getting an intermittant P0172 code, which is passenger side bank lean. So, the moral of the story is...when replacing the oxygen sensor, go for OE, I replace the Bosch sensor for the second time since june 05.