Yes, but it shows the radiuses of the inlet ports. These could be ported more or ported less.
If the regulations are that Subaru is not allowed to enlarge the ports, then this is the first time we have a document from the factory, that has dimensions and radiuses for the port.
I'm reading so far that when FIA took over for Group N, they made changes, but did keep the engine internals stock, require restrictor for the turbo and the flywheel has to retain diameter and weight.
Does this sound right?