'68 318 to carbed Magnum 5.2: Check my checklist

Success, for once:

After some Googling, I'm almost certain the steering gear box fitting is a $4 JIC (flare) x ORB (O-ring boss) hydraulic fitting adapter. Best Google term: "JIC x ORB".



The '68 power steering pump has 7/16" threads at the JIC end (which works out to 1/4" JIC, as JIC goes by pipe size) x 1/2" ORB. The '69+ is bigger at the JIC/flare end; Rock Auto says 5/16". Thus, 5/16" JIC to 1/2 ORB should work.

Even though the fitting is shown and said to be designed for an O-ring, the design is no different and can have a standard copper crush washer put in its place. Same thing.

All the Mopar parts sellers asking $25-30 for the same fitting can go home now.