Ok guys, this is a different question not regarding the actual swap itself, so don't jump to the search conclusion.
I am about to do the swap, my parts will be in shortly }( , and I was wondering if you guys thought it might be a good idea to replace the wheel bearing while I'm in the process of doing this work. I am using the entire knucke and hub assembly off the donor car, so I'm just wondering if it would be a good idea.
Thanks!

If it ain't broke, don't fix it

That's the problem, I don't know if it is good, I am assuming it is, but I'm not 100% sure. The donor car was at a junkyard without tires, so I couldnt check if there was any wobble.

if yours is all set, then don't mess with it. You might have more life on yours then there is on the junk yard one. I would keep it around, just in case, though.