In my yoot I had a 69 GTX like the one in the pic up to about 130ish on the 22 freeway, that was pretty much maxed out and it felt like it was floating. It did NOT handle well and was far from confidence building.
It had the 440 magnum with air grabber, aluminum intake with 750 holley and headers and was very strong.
If that aero package could net them another 20 mph and provide enough downforce to keep the car on the road, then it was truly a magnificent work of engineering.
