Unless it's an all out effort and you're going for every last 1/10 of a second, I'd leave the longer hangers in there and just do the 20" segment leaf.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
