The 3rd gen is a solid rig. When you get ready to do the rear shocks, make sure you start a day or two ahead spraying the top nuts with PB Blaster/ WD40, etc. as they are a bit tight and there isn't alot of wiggle room to get a breaker or anything much up in there. I have only read about this myself, but of all the things that seem to give issues, this seems to be the main one.
Also, I know this isn't exactly the route you are going, but it is very well written and the video is well done. Should be helpful if for nothing else just to help educate you on the suspension system. He has several other links for some other things, like the "Tundra Brake Upgrade" and some others.
Project SportRunner[/QU
Good stuff. Thanks.