Magnum Roller Lifters

It’s a 408 magnum, EQ heads modified by B3 Racing, Howard’s .565 lift cam, roller rockers purchased from B3, rocker girdle etc etc not stock by any means. That’s why I opted for the Performance hyd roller lifters by a well know company. Been in the car 2 years maybe have 8000 miles on them. 6000RPM max limiter