Horrible Noises when going over Bumps and Jumpy Steering

[dangerofdeath]

As the title says I can hear metal on metal scraping when I go over bumps or potholes and the truck is bouncing around. Also if I hit a bump at any speed the steering will snap towards the right side of the truck. Convientely that's where I found the arm with missing bushings in this picture. When I tap this arm with a hammer there's about 1/4" to a 1/2" of travel. If I do the same to its twin on the other side of truck there is no travel at all. Therefore this thing is my problem.

Any ideas on what this part's called, where I can get replacement bushings for it, and how to fix it?

For reference I'm working off this list of bushings for my 1987 2.0L 2WD Ram 50. http://www.energysuspensionparts.com...ighty+Max+1987