You should mount it at the opposite end of the valve cover that has the inlet breather, prefferably with an oil control baffle beneath it and a divider in the middle of the valve cover so as to promote crankcase scavenging of the corrosive blowby gasses. This usually means putting the PCV in the rear and the breather in the front of the valve cover. Most auto parts stores have appropriate grommets to accomplish this. Good luck.
