Looking for help on breather system setup!!!

[Boxersix]

@allblackedout5

One Nice thing about my headers is the pass side has a bung for an O2 sensor already, do you know off hand what size thread an O2 sensor is because i could tap the other side and screw in two -10,-12,-16 to NPT adapters to run the -(w.e) line to…

o2’s are typically an 18 x 1.5mm pitch