An integral track vehicle seat structure has a pair of laterally spaced side rails providing seat cushion mounting means, including a seat spring and seat back adjustment mechanism mounted to the side rails, a plurality of floor anchors for securing the side rails to the vehicle frame and an integral track formed integrally of the side rails and floor anchors including relatively adjustable and position lockable upper and lower track members each having an opened box section like configuration which slidably fit in internested, telescoping relation to secure the vehicle seat at all times to the vehicle floor while providing for forward and backward seat adjustment.