Hi! You actually can using SFOTT or MacPostFactor, but you’ll struggle to find a GPU driver (they do exist tho)
Hi, the processor will work just fine, but it’s recommended to do an EFI upgrade from 1,1 to 2,1, then you can run Lion and unofficially newer OSes
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like: