Increased ratio rockers are a pretty standard thing. However, I usually see them as a complete assembly with the mount to the head offset from the original location. This is the geometry change needed.
So I see the reasoning behind only supplying intakes rockers based upon cylinder pressure etc... I also see how you could "fudge" the push rod end and valve stem ends a little to gain a little increased lift, but I don't think that this little amount of fudging could give you a 24% increase in ratio.
I googled the company name and came up with no matches. Fishy. Does Langdon or Clifford have this same type of item for sale? I havn't seen it. I suspect they would, if it made sense to do so and it worked. Fishy. It would not be hard to design (and mass produce) a new set of rocker shaft mounts. Might even find some rockers currently in production that would work with OEM valves and lifters. This would be an easy bolt on performance modification, that Clifford or Langdon could sell. These guys know what they are doing, so why aren't they? Fishy.
