easy enough

what you need is a pinto donor, be it sierra or granada

you need to swap over the alternator bracket to the one with the power steering attachement, you've got to get the belts as they are longer as well and the pump
the pipes coming from the pump are specific to the pump but you can probably get some made up aftermarket
the racks are the same on all sierra's so a power rack is all you need

other than that it's a 3 hour job if you are unlucky as there are 4 bolts on the bracket and 2 bolts on the rack to undo