The original parts are non existent. I tried ordering them through a friend that works for Toyota before I made this post.
I ordered a bunch of similar sizes online and tried them all. Found some that work.
For future reference and searchability:http://Www.theoringstore.com
#B70331 x 2 (please note you have to order at least 4, though, as the manufacturer has a minimum order on each number). This size works for the filler neck and the sender.
#B70329 x 1 (again, you'll see a minimum but they're ridiculously cheap). This size works for the center/top feed/return line unit.
Hope this helps someone in the future.