Hope this is in the right place. Hey guys need some help getting parts for my 97 yukon gt. went to change rear drum brakes last night and had a mess of what looked like grease everywhere. so I'm looking to change the axle seal and bearings however, previous owner did a rear axle swap to a 14 bolt 9.5 inch 6 lug semi floating rear end, only info I got from him was it's out of a 1500 hd. with out knowing the year make and model of the axle parts truck, how do I get parts for this repair. I've never worked on a rear end in the past. And this is my first 4 wheel drive truck i have owned. Also what else would you recommend replacing while rear diff cover is open. Really don't want to go back in there for awhile. truck has 147k miles 6 inch lift 3 inch body lift running 35x12.5x15 tires thanks for any Info you can provide.