I have a motor that I need help with.<br />It is an evinrude / triumph 55hp.<br />It is a 3 cylinder I think from the late 60’s <br /><br /><br />I need help finding out what year that it is and the model number.<br /><br />Some nice person stole the lower unit off of it just after I bought the boat.<br />I have asked around at boat shops and they are no help. They just tell me it is old and not worth the money, The thing is I do not have a lot of money to replace it with a new one. <br />So I will be doing the work myself.<br /> <br />Does the lower unit have to be off of the same size motor or could I use one off of a 40hp motor.<br /><br />Also where do I measure for to find out if it is a long or short shaft.<br /><br />Thank you for any help you can give me <br /><br />Roger J<br />The Model # is 55973A the other # is J06213