Each sticker card was backed with an image of a different label in the series.

The stickers that were replaced:
#6 Spitghetti by Mad-Itch
#27 Bananacin by Beaver Frozen Fur Dinner
#50 U-8 by Pestea
#53 US Fail by Arash Spring
#57 Dare Eat These by Kooky Glue

The stickers with different backs:
#37,#44, #46

Original packaging varies:

Either Lively Beer / Bananacin
Or .... Miracle Whiffs / Joke
And a 3rd one with Lively Beer / Windy's Burgers