Hotchkis 68-70 GM A-Body Big Block TVS System ExtremeHotchkis Sport Suspension 89005 Total Vehicle System w Extreme Sway Bars 68 70 GM A Body Big Block. Whether you cruise a slammed SS 396 Chevelle or a restored GTO anyone who drives a classic Chevy knows that handling isn't one of the car's strong points. Now you can make your classic Chevrolet handle like a late model muscle car. The Hotchkis TVS is an all inclusive kit that has been designed and tested as a system. No need to mix and match