Repro Pontiac round port/Oldsmobile W30 cyl heads

[w302nv]

I cant really see why everyone has their panties in a bunch over these heads. If they are anything like the intakes, W27 covers, red inner wells, OAI, or hoods, you can spot them from a mile away....so you have to work a little harder to make sure you dont get screwed....what else is new! Nothing anyone can do about it....heck you might be better off and learn new things in the process...(Im not usually a glass half full kinda guy...).
So has anyone with a respectable amount of Olds/W-Machine knowledge actually touched these things? What about date codes? Its very unlikely that these will be perfect knock offs.
Just like vintage guitars...there are people reproducing mega rare parts (see 1959 Les Pauls) and making a tidy sum doing so....that has done nothing to the value of the real things.......except maybe help inflate the values....I'm not so sure this does anything to make it tougher to authenticate a W-Machine.