Emasculated Race engine vs great street engine:
Not really a shocker: Test will predictably favor the great street engine every time.

Race engine in it's first, original configuration as intended by Chrysler Engineering
(A990, '64 Circle track versions, etc).....The street version was a band aid to satisfy sanctioning bodies.

What I see is:
"We're just going to pretend the street version came out first and call that "the legendary".
in spite of awareness of history, knowledge Chrysler never wanted to sell them for the street, at all, and so forth.

Two points of compression, crossram manifold, probably another 30 degrees of duration/big solid flat tappet stuff=All came first and were the original intent....
these things just might affect horsepower ever so slightly don't you think? That is "the legendary" package swept under the rug for this lil' show.....

There is so much that is improved on with modern parts selection, for both engine types.

No matter what, I say: Have fun and build whatever it is you want while you can... because the day will come when you can't.