motherboard dimensions

Does anyone know the physical dimensions of the motherboard in a G4 Quicksilver 2001 and/or a G4 Cube? The Quicksilver is getting a new, larger home soon and I want to be sure the case I want will hold that motherboard comfortably. Eventually, the Cube may be moving into smaller digs, so the mobo dimensions *really* matter there.

TIA.

If you have the computer, why not just measure it. I looked around and couldn't find any information on it. I will keep my eye out though.

I ran across the dimensions somewhere (Alzheimer's prevents me from telling you where); there's only a +.15" difference (no, I can't recall which dimension, either) over a standard ATX mobo.