I did this install a few weeks ago. Got a good deal I think on the set ( $200 bucks used, but in such great shape they were practically new. F & R ) install was pretty easy, the hardest part was in the back, you have to widen up the end link brackets on the truck to get the wider/thicker end-links in. The truck handles pretty dam good, only thing is I'm still on the OEM 16' wheels. I plan to switch to the 07+ 17" wheels with a slightly shorter tire profile. So I can still go over a curb, and have good handling.
Here's a Pic I took while installing the front sway bar. The difference is not so apparent in the front, but the rears had a more noticeable difference in size.
FYI: that's grease, not toothpaste. lol I'll try to get a pic of the rear tomorrow and post it up.