I have an early Mac Mini (1.42GHz PPC) and have the opportunity to pick up parts of an Intel 1.66GHz Mac Mini. Specifically the bottom case and the motherboard with processor (but not hard drive or RAM). The question I have is whether the top half of my PPC Mac Mini will physically fit the bottom half of an Intel Mac Mini? Will it be a simple case of putting the two halves together? Thanks for any help.