[marcesq]

This upgrade is something I read about, and it was probably on this board, but I don't remember pictures.

Check out this article:

http://www.dietersmotorsports.com/tech/2002/3-2002.htm

Here are the pics:

Fitting on the left is the "3.6" fitting.

Notice the machined band on the 3.6 fitting which is again on the left.
Here is the part number: 901 105 361 01

What I did learn was that the part number is old, but the part has changed, such that the old fitting with the larger bore is no longer available. Don't let anyone tell you that they are already in your engine, because they are not unless the machined band is present.