I have a 1958 261. It came to me with the two original 1/2" brass fittings that connect directly to the oil line ports. However, they are actually adapters that convert from 1/2" NPT male to something female. Can anyone tell me what that something is? It looks like it could be an AN (or JIC?) flare. It does not appear to be a compression fitting because the flare is going the wrong way for an olive to fit and seal. It would be nice to reuse them, especially since one of them already has two 1/8" NPT female ports for sensors, and they are very heavy brass. Thanks.
