What's your best-ever parts or truck score?

[oem4me]

A great truck or parts score can be the result of smart/diligent searching or just plain luck. Either way, it's a rush when things go your way and a rare or special item lands in your lap for cheap. I though it would be fun to see what some of your all-time best finds/scores are.
Somewhere on my computer I had a screenshot of an Ebay auction for a CORVAIR master cylinder that I won for a measly $5. For a solid week, nobody else noticed that it was actually a one-year-only part for a 1963 CORVETTE, worth about $500 at the time. Needless to say, I was STOKED!
Let's hear about yours, and include a picture if you have one.