the male connection on the balance pipe between the carbs is the pcv valve,the hose should run from the pipe out of the block at the back.the rocker cover breather definitely goes to the air cleaner.the other connection should be the water connection for the cooling system,this is for heating the inlet manifold.just get a blankoff hose from a holden dealer,these are about $5 each,or you could just hook it into the cooling system.