You can buy a full 060 and replace the cpu. If it has a socket you won't need to send the board anywhere. Even if it required a socket it would be better for you to find out a 060 socket and to search a local electronic shop where they can desolder the old 060 and solder the socket.
The layout looks similar to the GVP accelerators but without the SCSI controller. Check out the jumpers in the Greg Donner's documents.
