First, I can't remember what's suppose to bolt to the back of the heads in those four spots...and also on the one bolt there that needs a nut on the end....If anyone would be willing to go out and look at their 3.1L and tell me what they find (or even a picture), that'd be most kind of you.



...and what's the purpose of the big tube? All it does on my car is go out about 18" and then branches off into a T and extends 3" in one direction and 6" in the other...and it's not hooked up to anything...just a vent, I hope?

 

You don't even need the charcoal cannister. Just put a breather on the hard line and call it a day. I took mine out a while ago and everything is fine as far as that is concerned.