Also keep in mind that there is a port at the bottom that does NOT get a vacuum line at all as it is a vent. I've seen many cars with a vacuum line attached to this vent and this is not correct.
That reminds me of another question. It looks like this port is capped, not being used as a true "vent", although it appears to be labeled as such. (VT?) In the pics I have seen, it looks like the cap is a T-shaped cap. Is this true to your knowledge?
