An existing shower stall built in 1967 is being removed within the next few days. I will have enough space for a five foot alcove tub. The existing drain will not match up with the new tub. I really want a bath. Am I forever stuck with a shower stall? The current floor is subfloor, plywood. I had the bathroom demolished down to the studs and subfloor. It is on the second floor of a well built 1967 colonial outside of Boston.