I overclocked my MKII for a while. It is a simple matter of changing the oscillator on the board. Your stock MKII will have a 50mHz oscillator and you just need to get a 60mHz one. Make sure you get the right type. There was another thread where a user asked what sort to get, but I can't remember the thread title. Redrumloa or AmigaKit should be able to get the right oscillator for you. It is the rectangular one not the square one. Its exactly like the 50mHz one on your card, but it is 60mHz. If you overclock, you might get crashes if your SIMMS aren't fast enough and you definitely will get cashes with the SCSI module attached.