I looked back several pages but didn't see the question I have. I have a 1930 home that I'm almost finished with the basement. I want to ad a bathroom downstairs. The main sewer line runs from the upstairs straight down into the floor. I don't want to have to cut the concrete and then the old cast iron pipe to ad the toilet drain. There's a clean out barely above the concrete. Can I raise the toilet up about 5-8 inches and run it into the clean out?