Comp hydraulic rollers are garbage. Had a friend with some in his BB Dart and they made lots of noise. Swapped to Howards.

We used Howards (Morel) and they have been flawless. 7,000 miles over 6 years and hundreds of dragstrip passes.

'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.