73 swinger needs wiper blades & battery tray

You should be able to find wiper blades at most any auto parts store. For example, Napa Auto Part Online seems to have them
http://www.napaonline.com/Search/Re...des&Ntk=Keyword&N=599001+101973+50020+2020014

I've seen the battery trays on eBay if you want a new aftermarket one. I'm sure they are around.