Tiny, Due to boredom, went searching via images for tail numbers with the ODS installed.
69 5820, 5823, 5826, 5827, 5828, 5830, 5831, 5832, 5833
65 0962, 0968, 0974, 0982, 0983, 0984,
66 0221
Those are the ones I could find, so suspect most of the HC-130 fleet had them. Although I do remember some didn't since we used the ods to remove benson tanks and can remember from that.
Gary