I've got a complete set of these on my Diplomat coupe. I don't think these particular part numbers are made anymore (FRONT = 80-2289, REAR = 80-2340), but I absolutely love these things.

The adjustment is a bit of a PITA, and if you really want to tune your suspension expect to have to at least take them apart a couple of times trying to dial them in. But...once the trial'n'error is done, sweet ride!

Here are the adjustment instructions that are a scan of the printed notes which came with my shocks. Maybe the newer ones have changed since, not sure, but this sounds awefully like what everyone else is talking about.