Airbags for 2004 F350 Help

[HobbyStock62]

Hello, I pull a pretty heavy race trailer and it makes the truck sag pretty bad. I am looking at add a leaf kits, but dont really want to add any height to the back of my truck. Airbags are a 100% new thing to me. Anyone have an idea what I should go for? Just looking for something to keep the rear end up, it sags to the overload bumper thing on the rears both sides. Really not looking to spend an arm and a leg, or just an arm. Kinda looking in the finger or hand range, MAYBE mid elbow. But please let me know what I should do here, again, airbags are 100% new to me.

Also, would I have to have a compressor on my truck hooked up to the bags, or just fill them with the compressor in the trailer or garage?

 

[PDT1081]

Firestone Ride Rite. Less than $500. No need for on board air. A valve stem for each bag, fill them with an air chuck when you need them. No drilling required either.

 

[08forddr]

I have the firestone on my 08 pulling a 11000lb camper. I spent about $280 for the kit and about $250 for the on board compressor.