Help with picking out a carb for 5.9 magnum

Fwiw a long time ago I swapped on a 650 dbl where a 750dbl was ..and then back to the 750.
The diff felt yes, a little snappier ...but after 3500-4000rpm the 750 let it pull wayyy harder.
In a stick car, the snap is crap compared to the midrange tq rolling in at 2000-3500 on the street..its a big diff.