I'm still back at the lifting davit, Ebb. Why do you think you will need one? With your modified outboard well you shouldn't need the added expense, clutter or weight. With regards to lifting eyes, add your own. Or make a lifting 'harness' out of webbing or some other suitable material.
As far as zincs go I admit I know very little so far. All metal parts protected by a (singular) zinc need to be in contact with each other correct? So are all parts of a lower unit 'conductive' with each other? Is that the reason you want to run a wire from a zinc into the power head? Go easy on me man, I'm just a kid!