1973 swinger door hinge removal...photo included

it looks obvious, but do I really have to go inside the car for the bolts for the hinges or should I just remove the door and leave the hinges?

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If the door hangs with good gaps and opens and closes nice, remove door from hinges. If you remove them from
body it will be a fight to realign everything properly. And, yes, you do have go inside car to remove hinges from body.