Mark, regarding your second question about routing the PCV: In my '56 Chassis service manual, it shows a small tube between the road draft tube that goes up over the valve cover and back into the intake at the vacuum port that is used for wipers, etc - the one right in the center of the intake. Later on chevy connected it to the air cleaner. The road draft tube is closed so it doesnt vent into the atmosphere at all. The vapors go back to the intake.
I thought the factory method looked kind of ugly, so with the PCV cannister I made, I run a hard line around the back of the engine and connects to the intake. I have an offy dual carb manifold, so I drilled and tapped for 1/8" pipe and just put a fitting for the hard line. You relly cant see it from the manifold side because it is on the back side pointing toward the firewall. Pretty simple actually.
