I was facing a very similar issue that most people on the HAMB faces, how do you add a PCV to a motor when you do not want to drill your valve covers or your manifold. I have read many threads on the subject and most suggested drilling a hole in the back of the manifold for a threaded PCV valve. I also knew that the original road draft tubes pulled from the back of the block in the lifter valley. I have a late 60's NOS Fenton 3 deuce manifold and after searching for a few years finally found a set of original Fenton valve covers. Needless to say I did not want to drill either. SO what to do now? I asked a fellow HAMBer, Crazydaddyo, for some ideas. He had a great one, run a line from the carb through the oil fill tube under the manifold to the back of the block near the distributor. Here is how I did it. Here are the parts I used. 5/16" copper line, tube nut, 1/8 NPT to 5/16" tube 90' adapter, 3/8 hose barb and length of clear tube. The PCV is from a 64 Chevy small block with 2 barrel (Napa part # CRB 29255). It threads into the carb base. I used a 90' elbow to get the room I needed. I first flattened an area on the oil fill tube for the adapter and hose barb to mate up against. I had to cut some of the NPT side of the adapter off to get it to fit inside the oil fill tube. I also flared the copper tubing and attached it to the adapter. Bent the tubing to fit the manifold and put a couple of coils into it to act as a baffle. Bent the tubing to follow the underside of the manifold. I drilled and tapped a bolt boss to accept an 8-32 screw so I would clamp the tube to the manifold. I did not want the tubing to crack from vibration. I drilled a small hole in the bottom of the coils to act as a drain for any oil that may find its way inside. I used clear tubing to kind of hide it on the manifold. I thought that maybe the clear tubing might not be so obvious. If it clouds up in time I will replace it with black line. If I find that I am still sucking oil into the PCV, I am going to add a oil separator. I plan on using a reusable fuel filter housing filled with fine steel wool. This should filter the oil out of the air pretty well. I hope this helps others who might be in the same predicament.