I have them for the back of the '63. Need to get some DA fronts.

I haven't had a lot of time to test with them and have only run a few passes. Between the heat this summer and no prep available, I haven't gotten to the track.

They seem to do what they're supposed to and ride really smooth on the street on lower settings.

'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.