Good News guys, I finally took out the straw after open the upper plenum. Not as difficulty as I thought but it's also not an easy job for me. G35 design made a lot of things hard even for replacing an air filter.
Again, cannot do it without the help from your guys, especially the video and pdf posted by redpearl99 and redonblack35! Thx!~

 

Sweet! you did it yourself. I was going to make a stupid comment and call you a truck!