Shelby introduced the BERG COBRA emblem for the SGT this year. You can see it on the Shelby performance parts website. The Sgt owners asked for the emblem. If I understand correctly a member named Berg came up with the new snake logo.
65-66 GT350's don't have a badge but if you want to get picky they do have a snake. Both have a Cobra on their steering wheel center caps and 66's on their tach and gas caps....