So, I've got a single processor 1.25GHz MDD from June 2003. I've often thought it might be quite nice to somehow obtain the dual processor from somewhere or other that was offered with this computer as a built-to-order option and swap it out. So i have two questions. Firstly, I do boot OS 9 with this machine on occasion, I dual boot with 9.2.2 and 10.5.8. Presumably having a dual processor in the machine won't be a problem for OS 9 booting? Secondly, and most importantly, does it matter what 1.25GHz dual processor I put in the machine? For instance do I have to get the dual processor that was specifically offered with the June 2003 Mirror Drive Door, or can I instead nick the 1.25GHz dual processor that was in the earlier August 2002 Mirror Drive Door G4? Thanks.