There seems to be a misunderstanding: I never claimed PPC support, I recommended a PowerPC-based system. Not quite the same thing. All the code is 68020 code, however, my understanding is that a fast PPC should be able to emulate such code faster than a genuine 680x0 would run it. It should presumably run fine on OS4 but testing has been done under OS3.9.
Of course you could recompile for PPC if desired...I don't have PPC nor OS4.