IMO a more interesting approach would be a modern accelerator card that plugs into the pds slot, although that's another several steps up in difficulty. Doesn't make much sense to me to go through all the trouble of stuffing the guts of a laptop into a larger clunker box, that's really no different than the microATX mods. A low end (by modern standards) PC running an emulator still makes a faster Mac than any of the stock 68K machines.