detroitspeed: 1966 Fastback Mustang.This is the official “Test Car” for Detroit Speed’s line of Mustang products for the 1964.5-1970 Mustangs. It is equipped with the DSE Aluma-Frame front suspension, subframe connectors, deep tubs as well as the

detroitspeed: 1966 Fastback Mustang.This is the official “Test Car” for Detroit Speed’s line of Mustang products for the 1964.5-1970 Mustangs. It is equipped with the DSE Aluma-Frame front suspension, subframe connectors, deep tubs as well as the

detroitspeed: 1966 Fastback Mustang.This is the official “Test Car” for Detroit