The PCV does not know if it is for a six or eight, therefore one from any CID engine that is around 240 CID will work well.. Something from a late 60's, early '70's Ford six, Gm six, would do the trick..
Make sure the vacuum hose with the PCV in it is below the throttle valve plate. Eliminate the road draft tube, using a fitting in it's place to connect the vacuum/PCV hose. Make sure that you have a vented cap on the oil fill tube...
The 8BA and 8CM engines are very simple, compared to the early engines to utilize a PCV on...