Sadly not too many performance parts were available for that little 170 cubic inch 6cyl. JC Whitney.com seems to be able to come up with unusual parts. Even though I haven't looked there personally for individual application. They do offer RV cams and headers and perhaps for your specific vehicle.
As far as power steering pup. Get on-line or eBay and look for the pump and bracket and steering gear from anything from a falcon to a mustang. However, that again is going to rob a little power off your engine as well.
Also perhaps www.edlebrock.com
these two are the leaders in performance parts.