Sound deadener, CLD tiles to stop vibrations. This is a great page to check out if you're curious about more information on sound deadening. http://www.sounddeadenershowdown.com/cgi-bin/index.cgi
chevy=chittychitty bangbang. it's going to take some serious work to get that rattling stopped. door panel push-pins are a good investment though. It will tighten up your door panels if you do it right.