Look at this web site and pic a vehicle that is not already being made by a kit maker or would have to be converted to your desired version.
http://www.wwiivehicles.com/default.aspOtherwise you would put in a lot of effort to build a look alike model that will be worse than, as good as, or better than, but would be judged by the other kits that are being produced on mass from the kits at less effort.
Unless there is a version that is not already available by resin conversion, the wee kubelwagon is like the willys jeep, very much liked as a vehicle, but very much modelled in every variation possible.
Unless you just want to scratch it for the sake of the challenge, this would not be my choice! But that is the fun of choosing what YOU build.
Nige