yes Im too lazy to make a pair of p.a.i.r. plates.

EDIT: Some A-hole filled the mount holes with two part metal.  The open ports, of course not.
Now what are my options?

pictures, PAIR system is a mess, a few bikes had them

https://drive.proton.me/urls/34834WCYP0#bsupiWiAZ3mP

you need to block those ports?in normal cylinders that ports dont do anything i believe, that is connected to the oil channel? never knew the ports function
i would try a glowing red hot screw, screw it in ,then try to get cylinder as hot as you can and try to push out, or maybe re tap the holes, i dont know which option is better

You can use PAIR blockoff plates intended for a Hayabusa (1st and 2nd gen I think). Of course you well end up with 2 extras because you have half as many cylinders.