Ok I have a 91 Bravo one transom assembly and am running a 2007 Bravo X drive. Should I go with the gimbal bearing part number listed for the 91 transom assembly part number 30-60794A4? Or the bearing listed for the newer transom assemblies 30-862540A3? Does anyone know what the difference is in these two bearings? Or is there a bearing specific for the X drives?