oil pan with drain plug??
Early 60's 904 trannys had a drain plug (63 Valiant) but the pan didn't have a recess for a internal filter and used a external filter. As far as 727 my 64 Belvedere didn't have a drain plug.The mopar performance replacement pan is a good value at $60-$70 giving you a drain and 2 extra quarts.It comes with gasket,filter and extension.