You, Should not have sent the money order, I have sold some parts to stangnet peps and i never accept money orders, I always use paypal, it's better for both party always, other then 3% paypal fee but that's nothing,
Anyhow, Since you bought big item like hood, i would give it at least another 2-3 days but then that's it! I bet he misquoted you the shipping cost big-time! BUT he should have kept you in the loop.
I bet UPS wont take it, fed-ex gonna charge him something like 250 to ship that hood, Best bet is truck freight but that's still $150+,
I hope you have his phone #, if you do tell him to ship that hood greyhound, That's the cheapest way and you pick it up at the station. another cheap way is kinko copy center, they have fed-ex account so they can ship the hood little cheaper and kinkos ship like item like that all the time, Picture frames and etc etc.
I hope everything works out and it will