So what benefit will i get from just adding 2" keys and shock extension to my 2004 GMC (http://www.dieselplace.com/forum/#) 2500 HD?

Does it allow me to have the same ride quality as stock or what?

Can i just crank up my bars and get the same results?

Well for one it will raise your truck more than your stock keys will allow..The shock extension mount brackets will help the ride some but it's NOT gonna ride like stock so just know what your getting into.

thanks for the link