The steering rack on the right hand drive models is from a Lancia Beta.  The bellows and bushes can be obtained from Beta Boyz or Omicrom.  The rack has a small plastic bush that is prone to breaking up.  replacement is easy.  However be careful when dismantling the rack that you dont lose the spring that holds the bush in place.  Its also important to not overtighten the allingment bush as it will make the steering feel heavy.  The track rod ends are from an Alfa part number SU047 available from Classic Alfa.