http://www.innovativeairsuspension.com/ Larry is da man.
Everything kinda depends on how much you wanna spend (2 way vs. 4 way), if you wanna tow, and if you wanna do a self install.
AirRide is top notch stuff and very well designed. Most of it is bolt on too with makes it easier for "self install".
If you got to a shop like an EAI shop or a local custom shop you'll likely be getting weldon kits.
There is so much stuff out it's no so much about the quality of the parts but the quality and competancy of the installer(s).
I'd personally look at KP Components stuff or AirRide...give Larry a call and he'll set ya up.