Welcome to MTBR. But you are rushing things here...you need to let it build for a little while. First, tell us a little bit about you. Not much, because we don't really care. Then tell us about the bike...how long you've had it, what you like about it, why you don't really care to replace it with a new one...all that stuff. Maybe tell us about a ride or two, post some pics even.
THEN...you can ask if any of us have spare XR's laying around.
Just goofing...this question still comes up about once every year, and it looks like the XRs are getting scarcer as people have retired those bikes. There's probably some sets sitting on bikes that are not ridden much if at all, owned by low/no mileage riders who don't frequent these boards. So it could be tough, but don't give up.
I've got a set on my Burner and there they will stay until I break the bike or it breaks me. The bike is so tuned and upgraded that I have zero desire to do anything else. But if and when it bites the dust, I'll part it out. So keep hunting, since they will pop up from time to time.