How detailed reference material do you need to work from? There are many, many contemporary photographs of the LRDG chevrolets, and the Imperial War Museum appear to have one of the vehicles in their collection... I’m sure there are other surviving / restored examples. I guess it’s not possible to get the actual blueprints for the original 1940s vehicles to work from. What kind of reference / source material do you use for your other projects if it’s not photographs and surviving examples?