I have just checked my A1200 and i have indeed installed the mmulibs at some point as i have mmu.library, MuMove4k (for Shapeshifter and Fusion) and MuFast something. But my 68060 lib is the latest phase 5 one.
I have tried to replace it with the 68060.library from the MuRedox package, as it is this libs that give the resource that MuRedox needs, but i only get a computer crash when booting the WB. I had to remove it, and then of course MuRedox complains of the missing something.ressource.
Seems i can't install that for now.