The 2010 version comes without the felt shims but with the shock boots. Check out the Exploded View and you'll see that you're fine
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The product code you gave is for felt shims, not bearing set. Original XB808 used 8x14x4 (with plastic inserts) for diff outdrive bearings. For 2010 verstion they were replaced by standard 8x16x5. I think you got the bearing set for the original XB808. You could use the 8x14x4 for diffs if you've got the plastic inserts. Or just get the standard 8x16x5 bearings and leave the 8x14x4 for wheel bearings.