These guys are right. Just got mine done. On one side of valve cover you need a PCV valve to a vacuum port on the carb, whichever port your carb is set up for to run the PCV (or you can use any vacuum port if you want). The opposite valve cover needs a closed vent air breather with a rubber hose to the carb air intake. It must be "filtered" air according to my referee. I drilled the base of my air cleaner and attached a $10 fitting and it was done. I left mine on, looks good and used a chrome air breather. Once I did that there were no issues. Will try to post a picture.
