Rear Main Seal orientation

The bearings are not burned, just worn down to the copper in the high pressure spots.
It could be completely redone, or just put new bearings in it and run it.
I have seen engines that looked just like that last for decades with the new bearings.
It does look like a lot more than 8500 miles but that doesn't really matter either.

If I had a shitload of extra money laying around then I would have it all done new.