Agree that they are great looking cars, but they drive like ox carts, heavy and ponderous. Had two friends that owned them, one a 63 (though not FI) and one that raced a 67 with small block. Both were good looking poor handling cars, fast in a straight line.
Have to wonder at the fact that it took GM 60 years to turn the original car into something that handled really well. Everything from C7 on is really well done.