Sorry I dont have any pictures for ya or anything... but basically the radius arm is the piece that connects to your front axle, just under the springs, and goes back a foot or two or so, bends in a little, and connects to the radium arm bracket. Replacing the bushings is a major job if its never been done before as you have to grind off rivets, etc. If it's already been done, they'll be bolts instead of rivets, but its still a major task.
I put a full set (4) of Monroe Reflex shocks on this guy. What a difference. I have checked almost everthing, and all seems to be well. I bought the shcoks from PepBoys, and they put them on for $40. Not too bad for me. They also installed a bug deflector for free. And... then they called me and asked what I thought of their service. I will write a letter to the manager complienting them on prompt, competent service. Now I just have to get the heat shield for the cat welded. Having a little trouble finding some one that will do it reasonably.