I agree with dapper dan, I have the Factory Rear air Ride, it's a flawless system. Take my advice look for it or simply order the truck YOU want.
I run full RAWR of 9,750# or more and the truck rides GREAT and sets nearly level loaded or not.
I had bags on my 11 DRW RAM, they improved the loaded ride a lot. Unloaded the bags did not change the ride. My 15 with factory bags rides much better than the 11 did unloaded.
You are spending that much on a new truck $1,300 isn't going to make a big difference. If you decide to get a GOOD air bag system you will spend about the same. then from personal experience you will be dealing with air line leaks with any weather changes.
