Hmmm...you really think you could do it?
Here are some helpful pics.
http://www.vintango.com/Shark03.jpg (Though it's a bit darker than the anime makes it out to be, that's the coat. My icon shows what it should look like, color-wise)
http://www.americanmystique.com/authentic-pea-coat.jpg (That's pretty much it, but this one's a bit short. The thing with these is that they're mostly black, or navy-blue).
The coat I've found is a pretty light tan colored trench coat (only more military lookin' than the kind you see businessmen wearing), so I'm probably gonna have to dye it too...no idea how I'm gonna do that...besides, it's meant to be a waterproof/resistant material.
Anyway, I plan on picking it up (among a lot of other things) today actually (finals are over, so I have some time), so we could meet up later this week and you can judge for yourself if it's a do-able job. Hmm, Elmira isn't that far, but s'there any way you could make it to the "big" city at all? I don't mean to my apartment or anything (creepy) but still.
If worse comes to worse though, I'm fine with nikkiolie's hot glue idea...at least then it'll be the right length.