This was brought up a few months back with a member with similar badges on a 4 door
First things first , TECHNICALLY , there is a "Tahoe SS" but it only came in 4 door and was named the Limited due to insurance reasons , The actual concept of those vehicles was called the SS . But again to my knowledge it was primarily a cosmetic package with a 120 speedo .
Now to the Badges , back when our trucks were new or newer these badges could be purchased at the dealership or the aftermarket world but To my knowledge are no longer Sold