want to fit pcv valve on earlier model Ford on 1990 Ford Taurus

The vehicle is not listed so I just put model etc in so can make a query. Vehicle is a 1965 170 ci ( 2.8L ) six that I have just rebuilt and wish to fit a PCV valve to rather than just have the open breather. Carbie is off a later Falcon that had a PCV valve. How can I ascertain what valve to utilise? John.

Asked by for the 1990 Ford Taurus
dont change the stock system.leave the draft tube in.