Look at this airride set up.

I've been a minitrucker forever, I have a couple right now. My only problem with this setup is the great lengths that people go to accomplish something that's so simple. I mean, it raises and lowers the back end. Period. Once you put a bed on it, and hopefully put a floor in that bed, you won't see this setup. I would say the lower links appear to be a weak point, but I am not gonna say shit about it after only seeing one pic, and not seeing it in person. It looks like kick ass fabrication work, but at the end of the day all you're doing is lifting and lowering the back of a truck.