1970's home with NO rough plumbing and drainage in the basement.
Cleanout and soil stack leaves house through foundation to septic at shoulder height.
Kitchen and powder above on main floor and 2 baths on upper level (all in the same corner of house).
Question: Can I tie into the existing drains and vents with a lift system for the toilet? Do you suggest jackhammering the slab or raise the shower for drainage?