I have been wanting to enlarge my bathroom and wondered how hard is it to move a toilet. I have an older home and it has cast iron pipes and copper. I have been redoing my whole house, redoing the floors, laying tile, etc and learning as I go, but I am trying to find out what's involved in the bathroom. I can not afford to hire any one to do it, so if it's going to get done I have to do myself. I am determined to get it done and hopefully done right. I need to know do I have to use cast iron or can I use pvc and go into a cast iron stack? Thanks for any and all info Cindy