Not sure what happened in your deletion. Sorry for the inconvenience.
Be forewarned on you r plans, the Transit is quite under powered for any serious hauling. We have one in our fleet that has about 800-1000 lbs in it, has little acceleration and tends to decelerate in fairly mild hills. Max payload is 1600 lbs, not a lot depending on what you plan on throwing in it.
Specifications - 2010 Ford Transit Connect Van XLT - Yahoo Autos
Since yours was all ready contractor grade, unless the springs and struts are shot, are probably the heaviest you'll find. They do make air suspension kits if your interested, but before making any modifications, I'd get an estimate on how heavy your mods are going to make it. You have to remember, the GVW doesn't just look at the suspension and frame, but the capacity of the brakes. Also, the Transit is a unibody, they don't take overloading very well.