I just purchased a 1958 Tomahawk Ski Mate. The boat is in great condition, very sound. I need to purchase a motor, and the spec say that the transom height is 15" and the Max. O.B.C. H.P. is 65 H.P. Max O.B.C Load is 1025#. I found a 1974 Johnson 65 H.P. with controls and a long shaft. However, a boat dealer told me that this is an antique boat and I will not be able to get a motor to fit on it. He said I would have to have the boat completely re-done, and it probably would not be worth the expense (he has not seen the boat). Is this true? If not, do I need to worry about putting this size motor on the boat as it is older. The transom seems to be sound. Thanks!