From Mopar sight: Cylinder Heads, Stage VII
These heads have a flow rate of 325 cfm intake, 226 cfm exhaust, at .700" lift.
1 P5153823 Cylinder Head, Aluminum, Max Wedge, Raised Port, Stage
VII, 75cc, Angled Plug, 2.20" Intake, 1.81" Exhaust, 290cc
Intake, 100cc Exhaust, B/RB.
I wonder if...