I have searched the list and read all I can find.My 55 has disc brakes on the front . It will not make a u turn except in a empty Wall Mart LOT. The bump on the steering link is not touching the A arm at full lock. The wheel turns about 3.5 turns lock to lock. The tires do not touch anything. The power steering box has a 605 stamped on it. this is a picture of the pittman arm.