Just go to advance auto and get a HELP universal vacuum t. It has a tapered design on all 3 ports and you just cut off up to the side you need. This way the vacuum meter can be connected to the 1/8 port while the pcv is on the 1/2 port.
PS, make sure the vacuum hose for the meter is facing upwards so the oil stays down in either the pcv or intake. HELL, tap in a catch can too while you are at it and put the vacuum meter closer to the intake.
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