I have been working on rebuilding at 1983 Evinrude 15. I converted it from a long shaft to a short shaft, replaced the water pump assembly and impeller, drive shaft, cut down the water line and a "boat load" of other repairs ranging from a new tiller handle to the idle control knob assembly...
I recently purchased a 14 foot Lowe Jumbo Semi-V aluminum boat (it's called Jumbo because it is wider and deeper than most similar 14 footers) and it came with a Johnson 15 HP Short Shaft Motor. Both the boat and motor were sold as is, and they are projects. I have a handle on the boat...