I sleeved a 1940s shower slab/drain with a new flooring/drain assy.

That thing looks like a disaster to live with, if left that way - especially with small kids and potential drowning. Definitely redneck engineering at work there. Looks like something the redneck across the street from me would have done. Don't you just love these Texas full bathrooms with NO windows!? At least one of the bathrooms has one. That place was built in the late '60s to '70s. The tile in the shower looks to have been update 20-25+ years later, however.