The day i bought my 02 box I was driving home from Texas and found a strip of road, If you have never been to west Texas there is nothing there for hundreds of miles, Any way i had a gps and it logged my top speed at 141mph I had pleanty of room left but flat out had never gone that fast before and got the jitters so I slowed down. There have been MANY days since then I wished I could go back now that i really know the car.
One thing is for sure it still had more to give no doubt about it although i have no idea how much, if I had to guess 10 or 15 more mph.