lol ya usually they are, I had to keep ordering the same damn interior fasteners from them twice, those little things are expensive when you get like 20 of them! they were like 80c each! and they got them wrong both time, and I kept trying to tell them, but they just said, oh that is what is in the computer, it must be the right part, but anyways I finally just ordered a couple different fasteners (I am talking about the black ones that are everywhere in the car, and they break a lot, or at least use to when I first started pulling them out)..
but anyways um, since I assume that you don't have access to another turbo/stud I would suggest trying a place like Levine's auto or a good auto store, they should have books/comp. databases for all the part numbers