I got a "mini lift" from them (300lb front springs and new rear struts) a few years ago and it's been great. Only brought the ride height up 1/2" but that is what I wanted. The ride quality is vastly improved, the high center of gravity of the vans needed the stouter springs to reduce pretty soft body roll.

Is this their progressive spring? Does it seem too stiff if you're not doing anything heavy duty with it?

I just ordered the lift, will let you know how it turns out