A Restomod Muscle Car Interior by Sabra Johnson Coach builders is two parts restoration, and one part modified. Where the restomod recipe is two parts restoration and one part modification, the pro touring custom interior by SJ Coachbuilders is one part restoration and two parts modified. A custom interior by SJ Coachbuilders is designed to retain as much of the original look and feel of your classic interior, while upgrading its electronics and comfort, safety, and over-the-road performance (economy, comfort, infotainment) to new-car levels.