Oreillyauto.com lets you pick your specific model car, down to the submodel and engine size, as well as put in your zip code so it shows you orielly's near you as well as let you find where the nearest oriellys with what you need is located at. Just search for oil pan on the home page, then click add a vehicle and put yours in. You should be able to handle it from there. ;-)
If not there, go to car-part.com and you can search for any imaginable part on any car in any salvage yard near your zip code, as well as how much those parts cost. Great place for us who rebuild or hotrod on a budget!