Steering Rack for 3.0
 

So in the search for the elusive steering clunk I have eliminated the column rubber bushing and steering double joint. It looks to be the steering rack.

Do I really have to get a reman one, do these not have parts available so you can overhaul it yourself? What are my options?

Oh, and realoem shows 2-3 racks for my vin, how do I know which I have?