You have to drive the pins out after removing the retainer clips. The hinges are welded to the door and to the body.
No
No
No
No.
Yes. The only difference besides the inside door panel is the 73-74 doesn't have the wing vent window like the 68 -72.
a 4 door nova can only accept another windshield from another 4 door nova or an equivalent gm mid size vehicle a 2 door nova can only accept a 2 door sedan windshield
Yes it will bolt right on
73 nova is the only nova were the back window rolls down
Yes - the 68-72 Nova hoods, door skins, fenders, quarters fit 73 and 74. The only difference is the front clip (grill, lights, bumpers, front windows).
Yes, this should be a perfect fit.
Perhaps with some modification