Advice on Cylinder Head cfm for 340 stroker

Check deeply into the Brodix heads.

Generally speaking, more cfm the merry. Best to have a fat curve. The best earliest flow possible.

Who is doing the CNC work on the Pro Maxx heads?
Can you list there flow spec sheet?
Here's the link to the Promaxx CNC heads w/specs.
Interesting how the Promaxx's version of cnc's flow less than the Modern cnc Promaxx!

Shocker 185 Mopar CNC (Sold in Pairs) - PROMAXX Performance Products