Hotchkis 1964 1/2-66 Ford Mustang Stage 1 TVS Kit *For Use with Rear Ends with 2.8in OD Axle Tubes*Hotchkis Sport Suspension 80040 1 1964 1966 Mustang TVS (Total Vehicle System) from Hotchkis Sport Suspension. The Hotchkis TVS Kit is an all inclusive kit that has been designed and tested as a system for your 1964 1966 Ford Mustang Coupe Fastback or Convertible. No need to mix and match components since the kit includes high performance coil springs 700 lbs in Front with 0. 5 in. Lower Ride Height 180 lbs in Rear Leaf Springs with 1. 5 in. Lower