Large Port Commando on a 340

I know a guy who ran those heads on a full boogie bracket car.
Stroker, 13+ compression, big roller, 904, yada, yada. 3000-3100 pound car with driver. Good suspension, well sorted car.
Ryan back in the day ported them( spent a ton of effort on them)
That car managed to barely break 10 flat once or twice, typically low 10 teens, best mph 131 ish. Flyfish is running that same MPH with eddies at more weight.
To me, not that impressive compared to a W2/W5/ Indy comparable build.
Not something i would want to chase ET with, compared to what else is out there.