It is your for free. It's the least I can do for the tires you gave me.I'll take it off your hands.
On a non-related note I have a few gear swap questions since I was finally able to find some Dana 4.88s in stock.
1) What are your going rates for doing the swap?
2) I assume it's best to pot the sensors while everything is out?
3) Do I need the overhaul ket or the rebuild kit to go along with the gears?