[Sellyservice@ao]

Hi from the Uk, My Cobra has a FE 390 big block and on the rear of the intake manifold it has a open breather, I find this lets the smell of fumes into the cab and makes driving it abit head achey, I've seen some pcv valves that bolt in its place but don't know what I'd need to change on the valve covers, want to let the engine breath as it should so any pics or info would help, regards Paul