Super cool project.

It makes me wonder what the smallest/barest SBC one could get away with for emulating the last 68k Macs or average mid-to-late 90s PPC Mac at full performance might be. Retrofitting a modernish laptop body of some sort with one of those so it would be capable of running System 7.6.1 up through Mac OS 9.x could make for a surprisingly useful "zen mode" laptop.