Aurora40,
I don't know if these pics help, but I used the original style connector from JeffVette with the plastic tubing on the two pipes on plenum. Mine came originally with hoses and bent to fit. I gently bent them back to fit the stock type connector and bought plastic barbed on both ends connector to plug into the the connector and my braided hose. The fit is so tight I did not use clamps and only the black anodized ends for cosmetics. As for the F connector above the PCV valves I did the same thing to catch can. I have extra OEM F connectors somewhere and managed to get a bag of them from a Corvette supplier (I might have 4 or 5 of them). Sorry, difficult to get good pics of this area, especially early on Sunday AM before even having my coffee and reading the Sunday paper.
Take care and best wishes with this.