The trans bellhousing casting was altered in 1935 to allow room for the 11" clutch, but someone posted on here a real '35 trans still built with the earlier casting...so check what you have even if it carries a 1936 serial.
Look at the bellhousing right where it bolts to the engine Block: An early type casting tapers from the flange right on back, a 1935 and up casting goes back almost straight for about an inch and then tapers. There are other differences, but that one will tell you easily what you really have.