Thanks for the questions. I will answer all of your questions as soon as I confirm some of the answers, (offering a flat floor, etc). The body weight is 2,120 lbs. for the Gas or Diesel unit. The shipping weight from GM is 4,873 on the Gas and on the Diesel 5,381 these are on the MSO's from the GM on the chassis. So, add the body weight to the shipping weight and that is how we are coming up with the Curb weight for the gas or diesel. Both of these units are DRW cutaway chassis, not a modified cargo van....... Naming this unit a CargoMaxx is confusing to some as they think it was origionally a van then modified....