Heres a video of me on the autobahn... every pull is in 5th gear. 3.73 rear end. 2012 Mustang 90 - 150MPH Top Speed Runs - YouTube
I hit the governor at 150... I have just installed a 1 piece aluminum d/s, added a d/s safety loop and Michelin pilot super sports on all for corners.
I fully intend to take the governor off and see where this thing will take me.