Water Separating fuel filter kit, gasoline use, outboard and MerCrusier

What size are the ports? The supplied plugs are what size?

I need to install a water separator between the tank and high volume fuel pump. I've got a 1986 mercruiser 120hp. Is this what I need?

Does this come with everything needed to install? i have a 2016 sun tracker fishin barge 20, with a 2015 mercury 60 hp command thrust motor.

Is this a suitable replacement for the oem 8m0157616? i know that the oem one is a 10-micron filter but given the current unavailability of the oem...