Just replaced my rear trailing arms and many thanks to Steve for posting this DIY. It was really helpful. I thought I'd pass along a few observations in addition to Steve's excellent instructions.
After removing my old trailing arms, it was obvious they were shot. I could move the rubber bushings around easily with my fingers -- they were very loose and floppy. The new arms are very stiff -- couldn't move them at all.
FYI, if you're a old little guy like me, it's a lot of fun cranking those front bolts to 118 ft lbs while lying on your back. I kept rechecking my torque wrench thinking I had set it wrong, and also wishing I had a lift instead of jack stands so I could gain some leverage.
In the end, Steve's DIY helped a lot, and it wasn't all that bad of a job. The only problem now is that I've seen all the other suspension components with rubber bushings, and I know they need to be replaced as well.