Highest flowing sbm heads?

RustyRatRod said

I'm not a head flow expert, but I JUST BET the best flowing Mopar small block head will be something with a "W" prefix.

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The P7 head is a pretty badass piece but if i'm being honest it hasn't really caught on as of yet BUT Kent Ritter does have one of his blocks designed to run the P7 head in case anyone wants to go there.