Here are some attempted pictures, both on the passenger side. It's not the most convenient place to take photographs!
First, passenger side looking back from the front:
Click For Full-Size ImageAs is pretty clear, the airbag unit is attached to the top of the leaf springs, and bears against a sort of shelf welded to the frame rail. The spring hangers are, of course, also on the side of the frame rail (but not in the picture). A bit of the exhaust piping is visible on the other side of the frame rail, but it's hard to make out unless you know what you're looking for already.
Second, same wheel, from the back looking forward:
Click For Full-Size ImageHere, the exhaust pipe coming back is clearly visible in the lower left, bending upwards over the axle (in the shadow). The vertical pipe-looking thing towards the back (which is, of course, the front of the vehicle) is the worn-out shock absorber that I ordered a replacement for this morning. On the frame rail, partly hidden by the leaf spring, is the rubber bounce stop that the axle bottoms out against if it were to bottom out. (The out of focus reddish thing all across the top is the underside of a storage compartment or plumbing bay or something similar and uninteresting in terms of suspension.)
I hope this is somewhat helpful.