I have a 1964 Johnson 40 hp Electromatic shift outboard on a 1964 Niagara Custom MFG. I would like to replace it with a new outboard. Concerns are the electrical hookups from old to new and the steering cables that are currently using cable hookups to both sides of the outboard. I restored this boat in 2009 rebuilding the transom and steering among other things to get it in the water. The 40 hp continues to be a problem and I would like to replace it. I am looking for any suggestions or guidance adapting an old boat to a new outboard.