No idea whet you live but I'm in North cali and have brand new half axle shaft assemblies you can have for free

 

Well if i need them ill tell you.. Im on oklahoma though it may not even be worth getting them here.

 

I personally don't know of anyone making performance steering boxes as drop in's, most are custom jobs. I would think that if the Jeeps are upgrading to Durango steering gear boxes and they are working for them you might just keep yours or rebuild it. You can pick up a kit at your local hardware store, and rebuild your power steering pump with a kit while your at it.