It is your choice:
JMHO: The 4 fitting set up would allow you to carry more pressure in individual bag to level the coach for travel; in case you have a heavy corner.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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