1978 318 heads? Small port? Or large

I know. But I have a TON of experience tearing engines down and that era is where I have the most experience. I have torn down I KNOW in excess of 1500 engines.

Never ONE TIME have I torn down a 318 that was a factory four barrel that had the big port heads. Not ONE.

Of course, that's just one little peon in Georgia. But I have never seen another one, read of another one or known anybody else that had big port heads on a 318 from the factory. So my experience is all I have to go on.

I KNOW this much. Chrysler most certainly DID put the 360 4 barrel intake and carburetor on the 318 engines with small port heads......which begs the question, if they did that, (and they DID) why in the world would they have done it both ways?
You know rusty, I don't remember for sure if I ever tore down a 318 factory 4 barrel engine, although I THINK I did 20 some years ago....and I THOUGHT it had 360 heads on it, but whos to say they were factory installed? I seem to remember reading somewhere that some of them had 360 heads, but that could have been incorrect. Sure cant believe everything you read, that's for sure!