Mine handles like a dream at 150 MPH... just ask the guy in the yellow GTO that tried to get around I drive my 71 and there is no comparison. At 120 MPH it starts to float and handles badly. But this 6-speed R/T is a dream to drive. And as stable at 150 as at 70-80. But the road was smooth and no traffic for miles. Oh yeah it was on a closed course Also I filled it up just before going home and drove only I85 back to NC. As soon as I exited the highway I filled up and checked the mileage...26 MPG I was floored and double checked. Yep 26 MPG. I kept it between 70 and 80 all the way home and the RPMs were never over 2000 RPMs. I am so proud of this R/T, it does everything great. And the attention is embarassing.