Need to know if I'm on the right track. My current motor ('99 225 EFI OG947119) is setup with clamps P/N 822023 & 822024. Do I just need to update to the inserts P/N 859434 & 859435 so that I have somewhere to attach the rigging hose to?? If so, do you know off hand what the outside diameter of the insert is, and I also assume that I would need to get the foam piece P/N 859343, but I was not sure exactly what its purpose was.