I have a 28ft regal 1985 twin IO with merc cruiser outdrives I want to put hydraulic steering teleflex sea star with simrad autopilot . Question what steering slave cylinder goes on the boat and what helm number would work? 2nd question-with using the simrad AP 14 do I need to buy a pump beyond the steering box to work the autopilot? I already have power steering off my port motor only. Appreciate your help...Gary