I have the 3 way Competition Engineering adjustables up front and Rancho/Calvert 9 position adjustables out back. I've been 1.56 sixty foot so far but the prep has to be pretty good. They ride really rough on the street on full firm 9 compression setting but set them on 4 and the ride is fine. I make a massive amount of torque with my setup so it gets hard to hook in lesser conditions.

For a street/strip ride they acrually work pretty well but I would love to try some double adjustable Vikings.

'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.