Hi, I have a 64 GP and here is an old pic showing the cluster:
Don't have a better pic handy at present. Yes, it does have the battery and fuel gauge but my car had A/C originally so the three middle gauges would have been replaced by a clock and a vent. If the car had no A/C then the three gauges would have taken over from the two in the cluster. Hope that helps a bit.
Hugh.
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'64 Grand Prix in Yorktown Blue on 8 lugs. 400 th400 combo.