Firestone Ride-Rite 4131 Coil-Rite Air Helper Spring Kit Features: Increase Vehicle Stability Improve Steering And Balance Improve Braking Effectiveness Prevent Bottoming Out Maintain A Level Vehicle Keep Headlights Aimed On The Road Reduce Tire Wear Height: 9.00 Width: 14.00 Length: 3.00 Weight: 0.43 lbs Vehicle Type: Suspension Load Leveling Kit Fitment: 1964/Chevrolet/Impala/SS/6.7L 409Cu. In. V8 GAS Naturally Aspirated::Rear^^1964/Chevrolet/Impala/SS/5.4L 327Cu. In. V8 GAS Naturally Aspirated::Rear^^1964/Chevrolet/Impala/SS/4.6L 283Cu. In. V8 GAS Naturally Aspirated::Rear^^1964/Chevrolet/Impala/SS/3.8L 230Cu. In. l6 GAS Naturally Aspirated::Rear^^1964/Chevrolet/Impala/Base/6.7L 6704CC 409Cu. In. V8 GAS OHV Naturally Aspirated::Rear^^1964/Chevrolet/Impala/Base/5.3L 5358CC 327Cu. In. V8 GAS OHV Naturally Aspirated::Rear^^1964/Chevrolet/Impal...