you are right, it can be upgraded and I have been considering that as well. To be honest, the Tooth mod is a two-part mod looking well into the future. The ToothPC would funtion as a desktop system for about 8 months before I remove it and implant it into my car as a car-puter. The drawer system on the tooth makes it very easy to itegrate it under the overhang in the trunk. I am also considering a custom acrylic case instead so maybe the tooth will be spares :dry: . I do love the tooth tho, but its primarily the exterior beauty/ugliness that appeals to me. MacOS 9 feels too outdated to use and a G4 upgrade is a bit costly for me.