Stock magnum lifters have .200 or more, stock ls lifters are .215, looks like the 3rd gen hemi are that way too, so like you I have never seen a stock hydraulic roller lifter that has .120 or less. I would sure buy a set, .060 would be even better. I would like to know what kind of seat pressure, and wt oil these guys are running that can run the lifter near bottomed out, and never have piston to valve issues. I am betting it is not 130 like most cam companies recommend so the cam does not go flat, or they have .250 piston to valve clearance. If I turned mine down 4-5 turns I bet it would not start with 125 on the seat, disregarding the pistons hitting the valves, at least with cold oil.