My opinion as a shop owner and installer of air suspensions...I would avoid AIM industries, and all of their other names, like airbagit. com, truckn. com, chassistech. com, streetridepro. com, truckinsuspension. com
Here is a company review of their company here on our website.
The stuff is cheap, built cheaply in 3rd world countries , breaks and works poorly and service is poor at best.
Their prices are unbeatable, unless you want to actually get what you pay for.
But don't take my word for it, just type "aim industries sucks" into your google or yahoo browser to find more glowing reviews of that company.
I like air ride technologies, and airlift is a good company as well. If you call airridetechnologies, and tell them what you are running as a suspension, they will help you spec it out.
Hope this helps, mikey