Watching this post , I just installed a 1959 261 in my truck which came with what I believe a factory pcv. mounted on the top of the crankcase ventilator tube .
I pointed the pcv down and run the hose under the motor and up the other side to the intake manifold .
I have another valve cover with a fitting on the carb. side towards the front and another fitting towards the back on the dist side but chose to run it under the engine just to keep the top free of clutter . That was the idea I had , just not sure if it was a good one ???
John