02 GT, 5-speed, 4.10 gears!
I had mine up to 130 mph on a long incline and it was still pulling when I had to slow down. That said, my speedometer hasn't been calibrated for the 4.10s so you have to take some off.
Thinking about it now it was really stupid for me to do it since a ticket at that speed can get pricey. I won't do it again.
2002 Mustang GT, 2012 F150 SC EcoBoost, 2012 HD FXDWG, 2011 Nissan Juke (wife's)