Do you have money to do the same job twice? Do you have "time" to do the same job twice, or more?
Sorry for being blunt. This topic kind of reminds me of working with a friend of mine on his Scout. And I ask him that same question. But, more often than not, those cheap parts will cost you more in the long run. I have seen it happen all too often. Happened to me many years ago, once or twice. Lived and learned.
Btw - my friends Scout has a chipped, half way gone, tooth on the ring gear in the rear end. He was all talking about just simply swapping the carrier diff. With out doing anything else. No new bearings on top of possible miss matched ring gear to pinion gear equals possible disaster.