Yes indeed, with less than that type of power I have made a 12 way splitter head. Pretty over-engineered that beast, and its hard to make a multi way splitter on a vertical machine. Unless your mates garden backs onto an remote and forgotton part of a rain forest, or Jurassic Park, he will struggle to find a trunk to test the capacity of that puppy!
A splitter like that will tend to run a bit stuttery unless you have a pump at 100-150litres p/m+. With a really hard chunk of oak or twisty elm the rams will hop out a bit, then wait for pressure to build up again for another skip, then bang as the wedge splits the timber. Once the big wedge goes in a bit the whole butt should break, so its rare you will need to do the full stroke of the ram-unless your splitting spruce with knotts thicker than your leg in it. Things like slow return speed and/or dangerous explosive logs etc can really take the shine off a sweet project, but I'm sure your mate has done his calculations if he's gone to that much trouble already.