this is a no brainer but some people just dont know these thing so just in case yal didnt think about it, allot of people think their doors are loose and making noises like the door is moving around (and if you have never heard worn out ball joints) you would say your doors are loose but its usually your ball joints on your front end that are worn out causing a noise that sounds like big parts moving and considering where your driver seat is positioned it sounds like it coming from your doors. turning your torsion bars, getting a lift kit, not greasing your ball joints, or daily driving on rough roads usually causes them to wear out. yal might want to get a mechanic to check your ball joints if you cant seem to fix the door problem. if your ball joints are wearing out your in for an unexpected dent in your wallet. :/
