Highest flowing sbm heads?

Besides driving my son's old '15 Scat Pak...... I eye-witnessed a stock 1320 Challenger (6.4 na 485 factory net hp) turn 12 flat WITHOUT traction. Name one other small block mopar from the factory... ANY available to the public... that would even scratch the surface of that time right off the show room floor. A 2950 pound 340 Duster?? 340-6 pack E body?? C'mon, you ain't serious..... The lead-sled at over 4100 lbs would eat 'em for breakfast while listening to blue tooth, watch them disappear in the back up camera and having the air conditioning blowing. But I get it, very few are realist.
Very few are interested....big difference...those cars are boring and NOT COOL