I know that there are quite a few Fiat fans who read this blog, so I figured I'd throw this out there.
This is a Fiat 124 crate engine. It's still in the crate. The seller calls it a 124A engine, which I believe (and feel free to correct me if I'm wrong) means it's for a 1966 - 1970 124.
Located in Danville, CA, click here to see the Craigslist ad.
A big thanks to Jon for sending me this link.