Engine ID on a '64 Wagon

What engine options did the '64 Buick wagons have?
I have a pic here, its not the best picture but that's all i have. What type of engine is that? I was told by the owner that it was a nailhead but i didnt know they came w/ that option.

 

That's a 300 CI Buick small block engine, a Nailhead has the ignition at the rear of the engine.

 

yeah, the early SBBs ( the 215 and 300 ) have their valve covers angled so that they will resemble the distinctive covers on their larger Nailhead cousins. while the SBB valve covers confuse many people, it's purely cosmetic. the engines are completely different and have no interchangeable parts.