Highest flowing sbm heads?
Absolutely
Buddy of mine ran his stock rocker gear stock/ super stock combo hemi in a drag pack car 7500-8000 every pass.
Went 9.60’s at legal weigh(3300 ish) and it was absolutely nothing special…. It’s just the friggin heads are that good…
He recently got rid of it to go NSS racing. Has a beautiful 64 Plymouth now that run 9 teens on the bumper off the foot