Well the 040/060 interface card is not expensive but sorting a real 060 processor might be difficult, then just change the oscillator. For a 66 MHz CPU use a 33 MHz Oscillator. I have the card but my A4000 board needs some repair the replace the re 9 buster with a rev 11 and i haven't had the time with all my other outstanding projects. Once done I'll post the progress. the 040/060 adapter can be bought on Amibay. I suggest adding more ram also.