well i think you're in american, so i'm not too sure about shops, but here we have huge stores where parts can be ordered in from japan, the manufactures, you could also try some scrapyards, they always end up with something that can be put to really good use.
my grandad, dad & uncle worked on cars for more than 30 years, so i'd go to scrap yards and i'd always see something to help them out with.
good luck!
http://www.toyota.co.uk/cgi-bin/toyo...sp?id=homepage UK site
http://www.toyota.com/ USi think they may differ ever so slightly, i'm not sure.