Yes, we are definitely on the same page. I just wanted to make sure... I know sometimes people snake the vent and wasn't sure if there were restrictions. I spoke with my architect today and she says we can get away with 2x4 framing on that wall, so I should be just fine. I am glad this can work out! Thanks everyone for the help!

Also, once I get this to an existing vent in the attic (cast iron), how do I tie them together, a tee or a wye? Also, there is an existing clean out in the attic, can I use that or is a clean out in the attic required? For what it's worth, the attic is only about 3' high and minimally accessible.

What do you suggest?

Thanks!

You can use either a sanitary tee or a wye fitting... must be installed so the flow of the fitting allows any rain water that gets into the pipe to drain back to the drain pipes by gravity.

MARK