I'm curious as to what the goal is for this.
I'm admittedly not as versed in engine building as others here but the stock hydraulic roller system seems pretty good. Along with being pretty flexible in the wide range of cam profiles, the stock stuff is pretty cheap.
What is to gain by converting the lifters? I read that some claim a few hundred more rpms of operating range. Aside from racing, what advantage is that?
I'm not being critical, I am just curious about what is the upside of doing this.