Electric Wipers were optional those years. Standard equipment was vacuum wipers. This was true well into 1970.

The last year for the flathead was '65, so this should have the "modern" 199 or 232. Sturdy engines, but being pre-'72 engines, you're seriously limited on what gearbox you can stuff behind it. Post-'72 engines use the Torqueflite auto and can easily be converted to 4 or 5 speeds.

But I assume thats all moot as this'll get hot-rodded.