1967 915 heads any good?

"Back in the day" before scads of aftermarket "big heads" were available, those were THE heads to find, unless you could score a set of the elusive max heads

(In my opinion, there are WAY too many people showing claiming to have "max" heads. There could not possibly be all that many that survived)

What are max heads?max wedge?or the magnum heads on 440 magnums that are non existent because they are the same as any other b/rb head.