Update, I just worked on the KA all day.
Tapping my oil filter housing for 1/8" NPT and installing a plug for oil feed for the future turbo, and my oil pressure sensor line.
This little plug twisted one of my allen wrenched like a candy cane before it broke loose, then it stripped when I used an impact wrench, so I drilled it out and then in finally broke loose using an easyout.
Tap for 1/8" NPT
Cleanout with a spin brush & brake cleaner
oil pressure sensor line & plug installed
all done, installed with a new OEM Nissan gasket & a tiny bit of RTV
almost completely done assembling the KA
brand new AISIN water pump
new front main seal
new coolant hoses
new coolant temp sensor
brand new white bunny clutch kit from competition clutches
ARP flywheel bolts
ARP pressure plate bolts
dust shield installed, transmission, 2 lower brackets, and all bolts tight & done
ISR engine & trans mounts the previous owner bought, I'm going to give them a shot.