4x4 Ford Transit conversion

Hi All,

does anyone have experience with getting a used Ford Transit cargo van (not connect) converted to 4x4? I know Quigley does conversions but only on NEW vans... wondering if any of the other converters have done transits yet? And what the price might be?

Believe there is a small outfit up in San Luis Obispo CA that has developed a kit. Principals are former CalPoly auto engineering grad students I believe.