I have just acquired this machine:

I bought it hoping it as an MDD, but unsure. Turns out it was a FW800. Oh well. All is not lost.
I intend to retrofit it to MDD spec and use it as my main OS9 boot machine.
I'm sure a motherboard swap is in order. But what else?
Help me, oh knowledgable compatriots.

I bought it hoping it as an MDD, but unsure. Turns out it was a FW800. Oh well. All is not lost.
I intend to retrofit it to MDD spec and use it as my main OS9 boot machine.
I'm sure a motherboard swap is in order. But what else?
Help me, oh knowledgable compatriots.