What's yer opinion on 427 Novas?

[442w30]

I thought I'd ask what the prevailing wisdom on 427 cars is.

It's been my understanding, as far as Yenkos are concerned, that some were sold as 427s, some as 396s, but there's a debate whether the 427 cars are COPOs - some think so, while some think they're transplants.

Has there been any documented, factory 427 Nova found? If not, is the debate settled, or it's still up in the air?

Your comments would be appreciated.