I went out to my local street legal drags tonight and had a blast. I had 7 runs and took all of them except one due to a misshift into third. First was a new Honda Civic SI, next was a Buick V8, third was alone, fourth was up against a 90 N/A Rx7, fifth, sixth, and seventh were all with a Mustang GT with exhaust. My buddy was filming and only got a few decent vids so I will give you those. More in a few weeks. I was crossing the line at about 105, but they weren't timing so I don't know how fast exactly. It was hooking up great though! I was running ~12psi, ~7psi by redline on 225/50/16 Kumho Ecsta AST street tires.
Vid 1http://www.youtube.com/watch?v=dW7mneFPrmQ
Vid 2http://www.youtube.com/watch?v=7l4SEwI39U8

 

I don't drag at all but nice launch!

 

It looked like the stang would start catching up and then u would pull again. Good Runs.
I'd say mid to low 13's