Imagine your family doctor showing up for a house call in 1970 driving a radioactive banana with a hood-mounted tachometer, black racing stripes, and a Hurst 4-speed stick shift. Wrap all that in a cloud of smoke, because 510 lb-ft of torque would tend to turn black rubber into white fog. Ask any Hemi owner from back then what was it like to look at that car from behind, and watch it pull away. That’s what the GSX was all about – elegant manners…