360 Heads- which ones should I expect?

I bought a 360 off of a guy a while ago, lacking the heads.

He said he would throw in the heads with the deal once he finds them (he is moving and the guys **** is a mess all over the place) and I said no big deal. He called and said I can come pick them up this weekend. Dude claims the motor was a factory 4 barrel engine out of his 79 Cordoba.

I am stoked to go pick them up and very anxious so I am wondering if anyone knew what casting I should expect them to be? The guy has no clue.

Or is is too hard to tell right now?