I reread the post and am a little confused
Is number 2 replacing the differential carrier and carrier bearings but no ring and pinion?
The Jasper unit is remanufactured. It will come with new ring and pinion, bearings, gasket, pinion seal, shims and misc. Not 100% sure on what they would do about the carrier, it depends if you have a limited slip or not. They are putting these new parts in a core, thats why there is a charge for it.
When they say "all new" then there wouldn't be a core. I just didn't want you to think you got a brand new rear diff. Sometimes the terms are thrown around by the person selling it and they aren't always black and white.
That is why I was suggesting #2 since it sounded like it was almost the same product for almost half the price.
Just trying to look out for your wallet
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