I'm resubmitting this question:
Would it matter if I kept the old port?
The PCV Valve accepts a 3/8" fuel line and the size of intake manifold line is smaller. The "nut" on the intake port is a 7/8" with about a 5/8" openining.
I'm wondering if such a decrease in size, going down from a 3/8" to smaller, would present any problems in the PCV System?