Hi and welcome. '59s are the best!!!
If you get the drain plumbing out and are still having trouble getting the tub out then try to run a thin piece of metal under the tub as in most cases, the factory glued the bottom to the floor. Mine was really stuck down and I used a piece of aluminum about the size and shape of a wooden yardstick to get the glue loose.
Best of luck and as everyone else says "Show us some pix."
4CU 2699 / AIR 10 / TAC AZ-1
I'm haunted by aluminum.
Charter Member of the 4 Corners Unit.