Who makes a quality air suspension kit for a 2wd dually... im not looking to "slam" it or anything i just want a smooth ride with the leveling ability if need be... though..if it did drop a few inches when i dumped the air and looked cool.. i would not be opposed to that either

 

The only one I've seen so far is from Airride Technologies, which is a 4-link setup that bolts in. I'd love to get it on my truck, but its pricey. I think I was quoted about $4k for front, rear, tank, valves and compressor. I think an engine driven compressor would be the way to go. I don't think I'd be playing with it unless the truck was running.