Hello I am new here and new to mac's so please excuse my ignorance.I was recently given 2 Powermac G5's,one of them works but the case itself looks like it was dropped out of a window,it is a 2.0DP and the second is a 1.8DP that isn't working but the case is nearly perfect.Would there be an issue with swapping the 2.0 into the 1.8? Thanks in advance for any help given!