Another help with b pipe install

[BBYamaha]

First of all there is no room where the head pipe meets the b pipe, THAT SUCKS, I grinded some of the hull where those spots that stuck out higher down flush and it helped but not much.
61x motor

The Problem

My head has 3 places for water lines, See pic, 2 are normal size ones a piss ant size. Prior to this pipe the piss ant size one teed into the line going to pisser, should I just plug it or what... What do i do with my second outlet, before this pipe it went to a pisser overboard..

Does anyone still have the cooling line schematic for how the cooling is run?

I am interested in mostly bottom end should I close the bottom one (its a pia to get to once installed) on my sn

 

[BBYamaha]

Think I will leave the extra big one alone plugged into a pisser with the restrictor in it, but what do I do with that little piss ant one?

 

[Mouthfulloflake]

I crimped the one on my wifes boat shut with pliers, and then stuck a piece of kinked hose on it clamped to itself. hasnt leaked yet.