Can anyone tell me the original engine color and possibly color code from any major auto paint manufacturer of the 320s? Specifically 1964s.
Thanks

I had a good spot on my engine block scanned and matched a couple years ago. Told them that I wanted it a shade or two lighter to allow for aging. They came up with International Harvester 'Deep Tartan Blue' PPG code 15473.

Merlin in southwest Canada had his matched to PPG 16122 per a recent FaceBook 'Datsun 320 Owners' post.

Here's a pic of my engine during build-up before it went back in.

For the air cleaner housing on our 620 Longbed, they matched up with PPG 18119. This is a colour for a Skoda (Czech) car. Also attached a pic of the underside of the air cleaner showing the spot of original paint that I had scanned.