Are they actually air lockers? I know they are selectable but I was curious air, cable, electric? Its to bad Jeep just won't use 44's front and rear stock, I can't really seeing it costing that much more than the existing setup. I mean if you are buying in that much bulk what is the price difference between a dana 30 and dana 44. I just hope they don't price these to ridiculously high, not that I can afford one anyway.