Quote:I was always curious as to how they held up.
My Mustang GT was a case in point on this question. Had great acceleration, and under 100 mph was a match for almost anything at the time (late '80s). But over 110 or so its Fox unibody origins began to give it away. The aerodynamics were squirrelly, crosswinds scary. Over 120 the rear got light. That big GT wing was never tested in a wind tunnel, it was pure decoration. You had to hang on tight and really pay close attention at speed. It was exhausting, particularly on those big sweeping downhill curves the autobahn engineers seem to love. The sunroof would begin to sound like it was going to suck right out of the car! But it could run... I once did Bremen to Frankfurt (just about 300 miles) in under 3 hours - with two stops for gas!
My '91 Audi 200 Turbo Quattro was almost as fast, and cruised effortlessly at 130+. No drama. Just a completely different animal.