We have our 67 SS-350 motor almost complete. We have found the correct dated carburetor, vacumm line to the distributor, alternator brackets etc. One problem we are having is it appears there was a PCV valve some how connected from the front of the carburetor to a fitting at the rear of the block. This fitting at the rear of the block is where the blow by tube was plugged in on previous years engines. If anyone has detailed information and or pictures of this PCV system we would be most appreatiative.