Why would you want to keep such a toilet? It’s 65 years old! It’s probably a two-piece wash-down unit. It probably flushes real good because it dumps 5+ gallons down the drain per flush and is noisy as heck…Unless your crapper is a vintage work of art, I’d recommend installing a more efficient modern crapper. You can find modern units that look quite vintage but work more efficiently.
NtP
