Put it in 3rd gear and see how many times the output shaft turns for each turn of the input shaft. Normal 4 speed will be around 1 1/4 turn on the output for 1 full turn on the input. An OD will be around 3/4 of a turn. Also most ODs used the one piece speedo drive/cable. Yours is set up for a screw on cable. 3rd gear would be the front shift shaft turned clockwise.