Rino: Yeah, built an entirely new hull; the only things they used from the M-113 was the drive train, road wheels and most of the suspension. The drive wheel was custom cast and cut (water jet cutting) to look authentic. The M-113 was aluminum, where as this replica is steel plate (and considerably thinner, except in certain areas where you'd be able to see the thickness). If you go to their website, I believe they have a photo journal showing the project from early on through the present. In addition to the tank, they have two half-tracks, a duce & 1/2, some motorcycles, and a staff car. They even have a authentic goulash wagon!