Wanted - 302 Heads in So. Cal Region

[70 Challenger Lover]

This is probably wishful thinking but anyone in the Southern California region have a set of closed chamber 302 small block heads for sale? I always hear how plentiful they and the 308 heads are but I can't seem to ever find any. I've checked a few boneyards with no luck and I don't want to make a career out of searching.