If looking for a 4-5 inch lift then Rough Country is the way to go. I am putting the 5 inch lift on my '05. truckaddons.com is a good place to order from that I have found yet. If ya find somewhere better though let me know lol
i just put a 6inch rough country suspension lift on my 08 ram about 3 weeks ago. I was just going to put a 4inch lift on and decided to go with the six. I couldnt be happier, ride is awesome and looks sick. Cost me about 1000 for the lift. Very reasonable and i put it on myself with a couple of friends, not hard. Hope this helps, go big or go home man !!