Hydraulic roller cam and stock rocker arms

We could do it effectively, but, I have no intention of ever running a hydraulic roller in anything but a mild rebuild of the magnum small block. Eventually I will explain why. It has nothing to do with the rockers, but the retro-fit hydraulic roller concept.

why, U thinkin lifter bores not tall enough? some folks are doing amazing things lately with hydraulic rollers, big power and plenty of rpm's :???: