ABF407-64-1 - 1964 GM A-Body Handling Kit- Stage 4, 1" Lowering SpringBring modern performance to your 1964 A body with UMIs Stage 4 Kit, engineered to deliver precision handling, strength, and comfort in one complete package. The front suspension combines tubular upper and lower A arms with inch taller ball joints for ideal camber curves, Delrin bushings for sharp steering response, Viking hybrid coilovers with 361 valving options, and a 1. 250 inch chromoly sway bar for flatter cornering. The rear setup includes