Direct Connection Big Block Valve Covers (Rare)?

I have an old set of blue anodized direct connection valve covers. I’m doing a big block build for my Dart and I thought these would be super cool to put on the engine.
I was wondering how rare these things are?
I went to Chryslers at Carlisle and I did not see a single pair of these anywhere.

I was going to paint my set Hemi orange to match my block but if they are really hard to find I might leave them as is.
Can anyone lend any insight?
Thanks.