The following review was posted on the shop where I purchased this kit three times, and it was refused three times. I post it following here, 1998 over 2000 allowed characters, with the original pictures I uploaded to the site.
I bought this kit for A979B, many pieces were not useful:
-the 37T metal gear is just for non B versions of A949,A959,A969,A979, B version needs 42T.
-the 15T metal pinion is just for non B versions of A949,A959,A969,A979, B version needs 17T.
-the four metal drive shafts/differentials out cups are already stock on A959B and A979B
-the metal central driving shaft is already stock on A959B and A979B