Vendors that I have used and have done me right!
Rock Rash Engineering (303) 349-2120 - Toby is a great guy and will treat you right. Has some fascinating stuff in his shop, makes you wish you had more money for sure.
http://www.rockrashengineering.net/
http://www.rockrashengineering.net/

Good guys and they get your junk to you quick...
http://www.frontier4x4.com/
http://www.frontier4x4.com/

Andrew is a very good guy to deal with and is honest to a fault, not to mention he produces an awesome product.
http://diybeadlocks.com/Home.html
http://diybeadlocks.com/Home.html

Mike is a professional that very much cares for his customers and will do you right at a more than fair price!
http://4x4land.com/
http://4x4land.com/

I have not bought anything from their new site but when they were here in Denver they were very good.
http://shop.poisonspyder.com
http://shop.poisonspyder.com