Turn your 1964-72 GM A-Body into a handling machine By Cam Benty and Gary Nelson Aldan American coilover suspension kits for GM A-Body vehicles are a complete upgrade that takes a 60+ year old GTO chassis from dinosaur to adept cornering monster. Muscle cars have changed a lot over the last five decades. Arguably, the original, the one that started it all, is considered to be the 1964 Pontiac GTO….