Bonderd

Hello, just recently purxhased a 99 trans am and have a few noise's i would like to address. I have clunks from going over bumps at slow speeds from the front and rear. I was thinking it may be sway bar related? Sounds similar to other cars that have had the links/bushings go. The other noise is a creek from drivers door/quarter panel area when going slow turning. I know my lower door hinge is bad and the door sags when open, but i dont know if it is related. Any help would be very appreciated. Car is all stock btw, no mods and is a automatic