Not for dual CPU modules. In a Digital Audio G4 the Dual module overlaps all of the RAM slots and the mounting holes are backwards.You can use Sawtooth/Gigabit Ethernet CPUs in a Digital Audio without any changes at all.
but how can the mounting holes be backward when you have two on either side of the connector and one on the other side of the CPU? (unless you are rotating the card, but it could never actually connect in that case.)and the mounting holes are backwards.