The ports on the rear of the case are different; the dual core machines have dual ethernet ports at the top of the port string while the dual processor machines have one ethernet port on the bottom. So you would have to do some hacking there, at the very least. Also, the DC models have the bluetooth/airport antennas built in instead of external antenna connectors.

Other than those obvious differences, I don't know if the rest would work. Let us know how it goes if you try it.