Air Lift Slam 59113 air kit??

[speedy]

I'm wanting to get it because when i haul something my frame sits so close to the rear end and its always a horrible ride. It will almost knock the teeth out of your head. Its not as bad unloaded but it will still hit a few times going down these bad roads around here. I was hoping this kit will fix it and maybe soften the ride a little. Its $262 free shipping on a few sites.
Does anyone have any opinions on this kit?

http://shop.airliftcompany.com/product/0/59113/_/Slam_Air%3B_Adjustable_Air_Springs%3B_For_Lowered_ Trucks

[BAD HABIT]

I've heard its a good kit, pm Hammerz71 I believe this is the one he has.

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