closed PCv to Open PCV Olds 403

I currently have a Closed PCV system; would it be possible to buy an oil fill cap from an open system, hook that up to the input on the carburator and put a breather on each valve cover; IMO that should work better and it'll be harder for the vacume to suck oil out of the oil fill neck because it's much higher then the valve covers. $.02USD everyone?