Howdy As my previous threads indicate, I have a Mac 4,1 enclosure for which I purchased a backplane and new CPU tray from a 5,1. Can I install OSX fresh on this machine (on the new PCIe SSD I got) and then once I get the new parts, swap them in? Or... Will the OS "read" or utilize the information from either of these boards and effectively become no longer a "clean" install. I want my first run at this to be a perfectly clean machine so I can have a fresh time machine "clean" backup. Kind of like installing "drivers" on a windows PC, it gradually gets full or bogged down as different pieces of hardware are connected and/or replaced. (Sorry for the PC word!) Thoughts? Thanks in advance!