After my passenger rear shock expoloded, I decided to upgrade with a set of Rancho 9000XL's. I picked Rancho part number RS999040, which are made for a 2000-2006 Tundra. They are approximately 3" longer than stock, for increased articulation. I had to drill out the lower bushing to make them fit correctly, but other than that they were a pretty easy mod!
Mod Thread: http://www.ultimateyota.com/index.ph...6&topic=8320.0