Dual air bags

I can do fab work, I'm a hot rod guy who has built cars & trucks from the ground up, and I'm a truck & heavy equipment guy for a living. I'm not afraid of steel and a welder. But this really doesn't even appear to need any custom work at all. The bags I have clamp on top of the leafs and the top brackets bolt to the outside of the frame rails. There's plenty of room to use two per side.
I just like the idea of spreading the stress out over more area and more hardware.
I almost can't believe nobody's already done it.