One of the local bus services that transport handicapped people have an E 350 van.

The outfit that did the conversion was Quigley up in Pa somewhere.

I hope to get a closer look and crawl under it one day, but they used a Dana 60 with what looks like a short four link with coil springs to give it 4x4 for winter travel here.

Probably only raised the front bumper a couple inches, and from the side it almost looks like a stock van.