Hello, I am trying to install a toilet in an older house that we have re-modeled. We are trying to get everything finished up to move in before Christmas, but I am having trouble finding a closet flange to fit the existing cast iron drain pipe. We have ran all new plumbing throughout the house, but the only thing I didn't replace is the toilet drain pipe. It is ~3.5" and the closets I've bought at Lowes do not fit. I don't know what to do, and I don't really want to change out the iron pipe, because all my other drains are already hooked up to it. (It was too intimidating for me to mess with, and it runs straight down from the toilet into basement floor and elbows straight out to a septic tank. Do they make a closet flange to fit this pipe? It had one in it before we took out the toilet, but I didn't think it would be a problem to get another, so I threw it out. Any help would be greatly appreciated. Thanks!