Am I correct that the only difference in the '65 SJC built 289 delivered in California was the hose from the air cleaner base to the oil breather cap?
If I recall correctly for 65 Calif delivered cars ( and some other states - a few) the only requirement was the closed system. PVC and the closed breather to air cleaner connection
I have examples as early and August 64 So basically from the start of the 65 production year.
On cars delivered to Calif during the 64 1/2 period I have a fair number of examples of V8's and 6 cylinders with the same system including cars built and shipped to the state from Dearborn.