
The SoundGard body was initially an option on the Waterloo-built Generation II six-cylinder 4030-Series tractors, which included the 4230 (100hp), the 4430 (125hp) and the 4630 (150hp).
The John Deere SoundGard body set the Q-cab benchmark so high that with the arguable exception of the Ford 700-Series flat-deck cab launched in 1977, it would take the rest of the world's tractor manufacturers...