Ripped out the old.... Moved pipes (buried the PVC vent pipe from bathroom below in wall, moved outside air to back corner), and added a new duct to blow warm air to bedroom below on 1st floor (the stove is going on 2nd floor), and new 6" Class A SS chimney installed. Framed new walsl and hearth area. Durarock and slate going in this week. Woodstock, get my stove shipped, I'll be ready for it next week!