I have a 12 degree Casale V-Drive with 18% gears with a 21" mount plate. It was in a 72 Hondo flatbottom, and I also have the strut. The V Drive has been opened for inspection of the gears, and they are in excellent shape. It's just loosely assembled without gaskets. It will require only a gasket kit and oil to get rollin'. It spins good, but I would probably recommend doing bearings just to be sure. No whirly in this one, just the in and out box.
I want $750 OBO plus shipping. Feel free to call or text (661)487-3369