Specialty Products Company (SPC) 23268 - 2. Ford Super Duty Sleeves have a fixed positive camber and caster change and are designed specifically to align trucks that have been lifted or to provide more caster change than the standard 23220 Series sleeves. It is for maximum drivability and to compensate for road crown, use Part: 23268 on the drivers side and Part: 23269 on the passengers side. Ford 4WD: 2005 and up F250, F350 Super Duty.