I replaced my crx's rack with a power steering unit, you have to use the crossmember too.
All that you need after that is the cooler, and resevoir from a sedan or hatch with PS (there are a few, all AT) and then if you have a B series youll need to use that pump and have a custom line made because the D series line attaches coming from the back and the B series comes to the pump from the front..so it wont reach but its no biggie.