My take on the oiling system crossover tube for the small block

And did it state for hydraulic cams ONLY or did I miss something
I still like your Duster

Maybe #3 post would help.

Heading and first 2 sentences.

"Small Block Oiling System Modifications

What I want to show you is the modifications that were talked about and used by the racers of the 70 and 80s. This one in particular was used when you needed to run a hydraulic lifter cam, it was called by some the “A&W Crossover"."