Gene said all he really does is cut down the thrust journal, and tap and plug the hole where the spigot that feeds the spray nozzles go. That way you get full pressure to the crank, and the oil distributor still only feeds 15 psi to the rocker arms. Be sure to use a '54 or newer oil pump and pickup, as it has a built in relief valve. Now if you want a full flow oil filter then things get a bit more complex, but not much. If you are interested I can run you through it. I really have been meaning to call, but have been just swamped at work. As an aside, even though you are getting the crank and rods as an assembly. Keep in mind that the rod journals are narrower as well on the '54 and beyond. So if you are entertaining any thoughts of using some of those parts from the old engine somewhere along the line, they won't work. This is the simplest way to go about it, but there is a number of variations that can be done. Like using GMC rods for example.....however that presents its own problems.