I do not know where you are in the US, but in Southern California, there are literally tons of junkyards around to find exactly what you need.
If you can find a local junkyard, they have some kind of part tracing computer which can locate what you are looking for and have the part shipped from another junkyard that does have it.
I did that exact same thing for a back window for my MR2 Turbo.
I hope that helps a little