Well, if you have a GBE board and PSU or setup an ATX PSU or just mess around with the pins on your Sawtooth PSU It is not that bad of a swap because you gain gigabit ethernet and you also gain the ability to use dual CPUs if your Sawtooth board was old. The cases *should* be essentially identical as far as I have seen. (but as you know they changed a bit for the DA and QS and again for the MDD)
At the very least you should bump that CPU up by 50MHz.
