Parts for my 72 El Camino

im needing parts for my 72 El Camino. the engine runs, but is stock and needs to be dressed up. I bought the car from california so it has some rust. it needs new panels, or the rust repaired. i havent even started on it yet, but looking for some leads on parts. have a few catalogs, and a few spare parts laying around.
im thinking i will wait till i get my shop built, since i would rather work indoors, than lay in the tall grass. anyone have any suggestions for a workshop thats fast and inexpensive? any help here is appreciated. thanks, John