Appears to be a smokin' deal. If it was me i'd slap it together and run it. Maybe. LOL
The heads appeared to have been worked. Maybe disassemble them and do an inspection. And a little porting. Or since you saved a bunch of cash, aluminum heads?
To be safe you probably should take it to a machine shop . I'm confusing myself. Haha
Opinions will vary.
That's what my intuition is telling me. But I'm sticking with the heads I have for now. Aluminum heads will be the next upgrade. I'm just looking to smoke my friend's 347 stroker in his '65 mustang