NOS Treasure!

I am in NOS heaven! Okay, not that kind of NOS. I’m talking about New Old Stock, those rare discontinued parts, never installed on a vehicle, that you can pick up basically "new" on eBay—give or take a little shelf wear. Today, the ultra-rare factory-fresh cylinder head I recently ordered for my 1984 diesel Escort arrived at my desk in its original Ford Motor Company box, still sticky with Cosmoline. I’m so stoked, though I’m going to be living on Kraft Dinner for the next few months: the head cost me more than the car I bought it for, but I decided it was worth it to avoid the uncertainty and potential for disaster involved in getting my existing cracked head welded up and re-machined. I’ve gotten NOS stuff for my cars in the past, always from eBay, mostly just trim and interior pieces that they don’t make anymore. But this is by far my most significant NOS purchase to date. How about you? What’s your coolest NOS find, and where’d you score it?