I bought these shocks this last week and I found time yesterday to install the rears, since I had already installed the fronts on a different night (ran out of daylight/time)
All I can say is...
Holy hell these shocks make a difference! I don't much driving time on them yet but I will give an updated report once I get some miles on them. Hopefully some of the terrible ride is gone. In some parts of the highway (really bumpy) the only thing keeping my head from hitting the roof was my seat belt .

I picked these shocks up for rougly $60 a piece (canadian $$) at a local 4-wheelin store. The shocks themselves are about 1"-1.5" bigger in diameter than the stock shocks. Heck one of the rear stockers I could compress with 2 fingers and it refused to rebound! .

I'm going to get some pics up here sometime this week