Late Model Head ID Question....

I have been out shopping for parts and I came accross a couple of engines.

The first is a 94 318 and the second is a 96 360. I don't believe that either is anything special. Just run of the mill engines.

Can anyone tell me what casting numbers the heads are likely, and what if any performance value they may possess?

Pros-Cons etc.

Thanks as always, ROB