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I was curious about this myself so I looked up the TMs and found that there actually are at least three different models/version/part numbers for these oil "squirters":
According to TM 9-2815-210-34P of May'74 it is only the Code A engines (LDS 465-2) that take the "double squirters" (#11641754).
All other engine models, codes B;C;D;E & F (all except LDS427) come with the "single squirters" (#10935308 )
Then, in TM 9-2815-204-34P, June '73 (covering the LDS-427-2), in Figure 8, Item 10 it shows the same single-style nozzle but the part number is 10889917. Who knows what ever is different from the -308 nozzles...?
G.