Ah ha, I don't want to turn this into a petty Presonus vs Motu debate, but I will drop in with the answer to this
You could probably do a very similar thing with two 896mk3 chained via firewire, each with 8pres attached via ADAT.
A more stable setup would probably be based off their PCI interfaces... one PCI-424 card can connect to 4 of the interfaces (including the 24 i/o), giving a maximum total of 96 inputs and outputs for the card.
But yea, 96 tracks is a bit more than the 24 the OP wanted, or even the 32 Vinnydude asked about