Would be a pretty big job and I don't know if you'll find air brake components in the size to fit your truck as they tend to be big rig big brakes kinda stuff. As well I'd be concerned about licensing and insurance... easiest to say nothing but if something even completely unrealted to the changes goes wrong you could be liable and insurance not paying as the driver wasn't licensed for air brakes??? yeah they are that stupid.

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2010 B4000 4x4 SE+
mods:Tinted windows,Line-X,BAK Rail Caps,rust proofing, stebel natilus air horn,ScanGauge II,hitch reciever cover, Belkin Iphone mount charger, rubbermaid floor mats, hose clamp tailgate, mud flap delete, Cargo light 3rd brake light, explorer lighted visors, mustang dome light, fog light mod, Mountaineer ohc, bosch evolution wipers, GenK51a mirror,Kenwood p680c speakers, Underhood LED's, Ranger winter rims 245/75-16 Blizzak DMV-1's, 180lbs winter bed weight