360 heads on 318

During my overhaul I took my head numbers down 4027596. Then went to our Mopar Head site. It read:

81-83 318 HP (Cast-in 360) 1.88" 1.60" / 66cc 72.5cc

I figured they were straight 360 heads. A'm I right to say that these heads were built for a 318 direct fit so that there would be no loss in compression and milling? Is this a "cool" thing?

Learning more every day.