My old 04 GT (when it was N/A) went 12.76 @ 108.8 with nitto DRs on 15s, tubular K, boltons, and VT stg 1 cams. I had a crap 60' too...was like 1.86.
I dont know why everyone is talking about blowers, stroker kits, and heads. Thats far from needed to go 12s...even in a vert. And with the auto...