looks like i have cooked my front diff after the truck broke down. (hole in radiator

) We towed the truck for about an hour home but one of the kids must have bumped the centre difflock switch

, so with the ignition on i didnt notice the truck was in 4wd. when we got home after the tow i noticed a burning smell from the truck. i noticed diff oil all under the vehichle the diff was hot as hell (i mean so hot that water would hiss when i splashed a puddle on it) yes it was raining aswell to make the situation even more enjoyable after putting a hole in my radiator and now a cooked diff
will be taking the diff apart next week but am told that i will prob be in for a r&p and new bearings. the beerings are cheap but the r&p are a different story
will see what they look like but does anyone have any good gears that they have taken out to change ratio or spares laying around to make my little job a bit cheaper
thanks