first, the bumpers, front and rear need to be taken off. then, if you do not have a lift, you need to take off the hood. disconnect all of the wiring and rag joint on the steering shaft. disconnect all hoses. if there is a motor and trans, you can leave them on the frame to make it easier to pull later. once everything is disconnected, take out the body bolts. they may be a little difficult to unscrew, but u always have the option to cut the bolt or the head off. once the bolts are out, (impalas have 8 bolts for a hardtop and 10 for a 'vert. if you do hot have a lift, air jacks work just as well. if you do not have those either, you will need to use a jacking system that will work for you. if you do not have a lift, don't do it by yourself. you can always get about 8-10 buddies to pick it up.