lazs, Roscoroo, I've driven all the Mustang models, but have never driven the pre-1970 GM F bodies.
One of the things I liked about the 1970-79 GM F bodies was their high speed handling characteristics (with the high performance suspensions of course). My '71 TA with the 455HO and HD suspension, for instance, simply felt better and better the faster you got. At 130-140 MPH it felt like it was on rails. (I never found a place I felt safe going faster, but the car felt ready.)
I never drove a Mustang that felt that good. How were the older GM F's?
culero